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What causes the itch in mozzie bites? And why do some people get such a bad reaction?

<div class="theconversation-article-body"><em><a href="https://theconversation.com/profiles/cameron-webb-6736">Cameron Webb</a>, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a></em></p> <p>Are you one of these people who loathes spending time outdoors at dusk as the weather warms and mosquitoes start biting?</p> <p>Female mosquitoes <a href="https://www.annualreviews.org/content/journals/10.1146/annurev-ento-120811-153618">need blood</a> to develop their eggs. Even though they take a tiny amount of our blood, they can leave us with itchy red lumps that can last days. And sometimes something worse.</p> <p>So why does our body react and itch after being bitten by a mosquito? And why are some people more affected than others?</p> <h2>What happens when a mosquito bites?</h2> <p>Mosquitoes are attracted to warm blooded animals, including us. They’re attracted to the <a href="https://www.cambridge.org/core/journals/bulletin-of-entomological-research/article/abs/role-of-carbon-dioxide-in-hostfinding-by-mosquitoes-diptera-culicidae-a-review/2506B86EF63852B2D02EC3FCEE1E3B8B">carbon dioxide</a> we exhale, our body temperatures and, most importantly, <a href="https://www.abc.net.au/news/2024-11-08/mosquitoes-climate-change-skin/104548122">the smell of our skin</a>.</p> <p>The <a href="https://www.cell.com/trends/parasitology/abstract/S1471-4922(21)00237-3">chemical cocktail</a> of odours from bacteria and sweat on our skin <a href="https://www.cell.com/current-biology/fulltext/S0960-9822(23)00532-8">sends out a signal</a> to hungry mosquitoes.</p> <p><a href="https://www.sciencedirect.com/science/article/pii/S2667114X21000522">Some people’s</a> skin smells more appealing to mosquitoes, and they’re more likely to be bitten than others.</p> <p>Once the mosquito has made its way to your skin, things get a little gross.</p> <p>The mosquito pierces your skin with their “proboscis”, their feeding mouth part. But the proboscis isn’t a single, straight, needle-like tube. There are multiple tubes, <a href="https://www.npr.org/sections/health-shots/2016/06/07/480653821/watch-mosquitoes-use-6-needles-to-suck-your-blood">some designed</a> for sucking and some for spitting.</p> <p>Once their mouth parts have been inserted into your skin, the mosquito will inject some saliva. This contains a mix of chemicals that gets the blood flowing better.</p> <p>There has even been a suggestion that future medicines could be inspired by the <a href="https://www.sydney.edu.au/news-opinion/news/2018/03/29/mosquito-saliva-vital-to-the-discovery-of-future-drugs.html">anti-blood clotting properties</a> of mosquito saliva.</p> <p>It’s not the stabbing of our skin by the mosquito’s mouth parts that hurts, it’s the mozzie spit our bodies don’t like.</p> <h2>Are some people allergic to mosquito spit?</h2> <p>Once a mosquito has injected their saliva into our skin, a variety of reactions can follow. For the lucky few, nothing much happens at all.</p> <p>For most people, and irrespective of the type of mosquito biting, <a href="https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2022.1024559/full">there is some kind of reaction</a>. Typically there is <a href="https://www.sciencedirect.com/science/article/abs/pii/S0161589023002304?via%3Dihub">redness and swelling of the skin</a> that appears within a few hours, but often more quickly, after just a few minutes.</p> <p>Occasionally, the reaction can cause pain or discomfort. Then comes the <a href="https://www.abc.net.au/news/health/2023-01-20/mosquito-bites-itchy-calamine-heat-ice-antihistamine-toothpaste/101652608">itchiness</a>.</p> <p>Some people do suffer severe reactions to mosquito bites. It’s a condition often referred to as “<a href="https://www.webmd.com/allergies/what-is-skeeter-syndrome">skeeter syndrome</a>” and is an allergic reaction caused by the protein in the mosquito’s saliva. This can cause large areas of swelling, blistering and fever.</p> <p>The chemistry of mosquito spit hasn’t really been well studied. But it has been shown that, for those who do suffer allergic reactions to their bites, the <a href="https://www.sciencedirect.com/science/article/abs/pii/S0091674904022183">reactions may differ</a> depending on the type of mosquito biting.</p> <p>We all probably get more tolerant of mosquito bites as we get older. Young children are certainly more likely to suffer more following mosquito bites. But as we get older, the reactions are less severe and may pass quickly without too much notice.</p> <h2>How best to treat the bites?</h2> <p>Research into treating bites <a href="https://linkinghub.elsevier.com/retrieve/pii/S0161589023002304">has yet to provide</a> a single easy solution.</p> <p>There are many <a href="https://www.healthline.com/health/outdoor-health/home-remedies-for-mosquito-bites">myths and home remedies</a> about what works. But there is little scientific evidence supporting their use.</p> <p>The best way to treat mosquito bites is by applying a cold pack to reduce swelling and to keep the skin clean to avoid any secondary infections. Antiseptic creams and lotions may also help.</p> <p>There is some evidence that <a href="https://pmc.ncbi.nlm.nih.gov/articles/PMC10309056/">heat may alleviate</a> some of the discomfort.</p> <p>It’s particularly tough to keep young children from scratching at the bite and breaking the skin. This can form a nasty scab that may end up being worse than the bite itself.</p> <p>Applying an anti-itch cream may help. If the reactions are severe, <a href="https://www.healthdirect.gov.au/insect-bites-and-stings">antihistamine medications</a> may be required.</p> <h2>To save the scratching, stop the bites</h2> <p>Of course, it’s better not to be bitten by mosquitoes in the first place. Topical <a href="https://theconversation.com/insect-repellents-work-but-there-are-other-ways-to-beat-mosquitoes-without-getting-sticky-171805">insect repellents</a> are a safe, effective and affordable way to reduce mosquito bites.</p> <p>Covering up with loose fitted long sleeved shirts, long pants and covered shoes also provides a physical barrier.</p> <p><a href="https://theconversation.com/are-mosquito-coils-good-or-bad-for-our-health-88548">Mosquito coils and other devices</a> can also assist, but should not be entirely relied on to stop bites.</p> <p>There’s another important reason to avoid mosquito bites: millions of people around the world suffer from mosquito-borne diseases. More than <a href="https://www.who.int/news-room/fact-sheets/detail/malaria">half a million people die</a> from malaria each year.</p> <p>In Australia, <a href="https://journals.plos.org/plospathogens/article?id=10.1371/journal.ppat.1005070">Ross River virus</a> infects more than 5,000 people every year. And in recent years, there have been cases of serious illnesses caused by <a href="https://www.science.org/content/article/how-rains-pigs-and-waterbirds-fueled-shocking-disease-outbreak-australia">Japanese encephalitis</a> and <a href="https://www.frontiersin.org/journals/public-health/articles/10.3389/fpubh.2023.1256149/full">Murray Valley encephalitis</a> viruses.<!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><em><a href="https://theconversation.com/profiles/cameron-webb-6736">Cameron Webb</a>, Clinical Associate Professor and Principal Hospital Scientist, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a></em></p> <p><em>Image credits: Shutterstock </em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/what-causes-the-itch-in-mozzie-bites-and-why-do-some-people-get-such-a-bad-reaction-243044">original article</a>.</em></p> </div>

Body

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A glow for every tone: The inclusive summer moisturiser you need

<p dir="ltr">If you’re looking for naturally glowing skin this summer look no further than <a href="https://www.jergens.com/en-au/products/" target="_blank" rel="noopener">Jergens’</a> new Melanin Glow illuminating moisturiser. </p> <p dir="ltr">This is the perfect addition to your skincare routine as it delivers a beautiful, natural glow that is suitable for all skin tones and is impressively long-lasting, even through sweat and a full day out.</p> <p dir="ltr">The standout feature of the <a href="https://www.jergens.com/en-au/products/melanin-glow/" target="_blank" rel="noopener">Melanin Glow range</a> is its unique formulation tailored specifically for women of colour and those with more melanated skin tones.</p> <p dir="ltr">With two radiant options—bronze or gold—this moisturiser offers extra shine for any season or occasion. It's also deeply hydrating, thanks to a blend of shea and cocoa butter, along with coconut oil, leaving skin supple and refreshed.</p> <p dir="ltr">The moisturiser helps even out skin tone and provides an extra glow without needing to tan.  </p> <p dir="ltr">Designed to even out skin tone and add a healthy glow without tanning, the moisturiser works best when applied straight out of the shower. The glycerin in the lotion helps lock in moisture, keeping skin hydrated for longer.</p> <p dir="ltr">For those concerned about a sticky-residue that often comes with moisturising lotions, the Melanin Glow Illuminating Moisturiser is exceptionally light on the skin and leaves behind a dessert-like scent. </p> <p dir="ltr">While the gold option may appear bright on warmer skin tones, it adds a fun, luminous touch for a night out. The bronze version, ideal for darker skin tones, creates a more natural look suitable for daily use, and despite its name, complements lighter skin tones as well with its subtle, non-tinted finish.</p> <p dir="ltr">Packaged in a 207ml bottle and priced at an affordable $15.99, this moisturiser offers excellent value for achieving radiant, long-lasting skin.</p> <p dir="ltr">It’s available nationwide at Priceline or on their<a href="https://www.jergens.com/en-au/products/" target="_blank" rel="noopener"> website</a>.</p> <p dir="ltr"><em>Images: Supplied</em></p> <p dir="ltr"> </p>

Beauty & Style

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Don’t like drinking plain water? 10 healthy ideas for staying hydrated this summer

<div class="theconversation-article-body"> <p><em><a href="https://theconversation.com/profiles/lauren-ball-14718">Lauren Ball</a>, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a> and <a href="https://theconversation.com/profiles/emily-burch-438717">Emily Burch</a>, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a></em></p> <p>Have you heard the saying “water is life?” Well, it’s true.</p> <p>Water is an <a href="https://www.hsph.harvard.edu/nutritionsource/water/">essential nutrient</a>. Our body cannot produce sufficient water to live, so we need to consume water through food and fluids to survive.</p> <p>Maintaining hydration is one of the most fundamental components of good health. But lots of people don’t like drinking plain water much. The good news is there are many other healthy ways to help you stay hydrated.</p> <h2>Why hydration is important</h2> <p>Water is vital for many aspects of body functioning. About half our blood is “blood plasma”, which is over 90% water. Blood plasma is essential for carrying energy, nutrients and oxygen to the cells in the body that need it most. Water helps to remove waste products via the kidneys. It also helps keep joints lubricated, the digestive system functioning, the body’s temperature controlled and skin plump and strong.</p> <p>If you don’t consume enough water, you may experience symptoms of dehydration such as headaches, dizziness, tiredness, low concentration, constipation and a dry mouth. Being severely dehydrated increases the risk of <a href="https://www.kidney.org/atoz/content/kidneystones">kidney stones</a> and <a href="https://www.healthdirect.gov.au/urinary-tract-infection-uti">urinary tract infections</a>.</p> <p>If you feel thirsty, it means your body is already <a href="https://my.clevelandclinic.org/health/treatments/9013-dehydration#:%7E:text=If%20you're%20thirsty%2C%20you,life%2Dthreatening%20illnesses%20like%20heatstroke.">mildly dehydrated</a>, so make sure you pay attention to what your body is telling you.</p> <h2>How much fluid do you need?</h2> <p>The amount of fluid we need changes as we age. Relative to our body weight, our needs decrease. So, a newborn baby has higher fluid needs (per kilogram body weight) than their parent, and older adults have lower fluid needs than younger adults.</p> <p>Fluid requirements are related to metabolic needs and vary from person-to-person. The normal turnover of water in adults is approximately 4% of total body weight per day. So, for example, if you weigh 70 kilograms, you’ll lose about 2.5 to 3 litres of water a day (not including sweating). This means you will need to consume that amount of water from food and drinks to maintain your hydration.</p> <p>Eight cups (or two litres) a day is often <a href="https://www.npr.org/2022/09/21/1124371309/busting-common-hydration-water-myths?utm_source=npr_newsletter&amp;utm_medium=email&amp;utm_content=20221016&amp;utm_term=7386723&amp;utm_campaign=health&amp;utm_id=31926817&amp;orgid=&amp;utm_att1=">mentioned</a> as the amount of water we should aim for and a nice way to track your intake. But it doesn’t account for individual variation based on age, gender, body size and activity levels.</p> <p>Alcohol is a diuretic, which means it dehydrates the body by promoting water loss through urine. This fluid loss is a key factor that contributes to the severity of a hangover. Always have a glass of water in between alcoholic drinks to help stay hydrated.</p> <p>Caffeinated drinks (like tea and coffee) only have a mild diuretic effect. For most healthy adults, it’s okay to consume up to 400 mg of caffeine a day – that’s about four cups of coffee or eight cups of tea. If you drink more than this, it may impact your hydration levels.</p> <p>To check your specific requirements, check out the Australian <a href="https://www.nrv.gov.au/nutrients/water">guidelines</a> for fluid intake.</p> <h2>People who should take extra care</h2> <p>Some people are at greater risk of the harmful health effects from dehydration and need to pay special attention to their fluid intake.</p> <p>The highest priority groups are babies, young kids, pregnant women, and older adults. These groups are at greater risk for many reasons, including relatively higher water needs per kilo of body weight, reduced ability to detect and respond to symptoms of dehydration, and barriers to consuming fluids regularly.</p> <p>Family and friends can play an important role in <a href="https://www.agedcareguide.com.au/information/hydration-for-elderly-people-and-the-dangers-of-dehydration">supporting loved ones</a> to maintain hydration, especially during warm weather.</p> <h2><strong>Ten ideas for keeping fluids up this summer</strong></h2> <ol> <li> <p><strong>Download a water reminder app on your phone</strong> This will help keep you on track during the day and give you digital “high fives” when you hit your water goals.</p> </li> <li> <p><strong>Add sugar-free flavouring</strong> Try a sugar-free fruit infusion in your water to make it more appealing. Prepare a jug in the refrigerator and infuse it overnight so it’s chilled for you the next day. Fill it up and take it everywhere with you!</p> </li> <li> <p><strong>Add some fresh fruit</strong> Add some slices of lime, lemon, berries, pineapple or orange to your water bottle for some natural flavouring. If the bottle is kept in a fridge, the fruit will stay fresh for about three days.</p> </li> <li> <p><strong>Make a jug of iced tea (not the bottled stuff)</strong> There are many great sugar-free recipes online. Tea contributes to fluid intake too. For green and black teas, brew in boiling water then cool overnight on the bench before refrigerating. Fruit teas can be made using cold water immediately.</p> </li> <li> <p><strong>Add a dash of cordial to your water</strong> A small amount of cordial in your water is a healthier alternative to drinking a sugar-sweetened soft drink or fruit juice. Diet cordials have less added sugar again.</p> </li> <li> <p><strong>Make a fruit ‘slushie’</strong> Combine fresh fruit, ice and water at home in the morning and sip to increase your fluid intake for the day.</p> </li> <li> <p><strong>Buy a soda maker for your home</strong> Some people find plain water tastes better with bubbles. Sparkling mineral water is great too, as long as there is no added sugar or sweeteners.</p> </li> <li> <p><strong>Before you eat anything, have a glass of water</strong> Make it a rule with yourself to have a glass of water before every snack or meal.</p> </li> <li> <p><strong>Eat water-rich fruits and vegetables</strong> Many fruits and vegetables have a high water content. Some of the best include berries, oranges, grapes, carrots, lettuce, cabbage, spinach and melons. Keep a container full of cut-up fruit to snack on in your fridge.</p> </li> <li> <p><strong>Use a water bottle</strong> Take it with you during the day and keep it by your bed overnight.</p> </li> </ol> <h2>A tip on water bottles</h2> <p>Water bottles are everywhere and sometimes seem to offer <a href="https://www.refinery29.com/en-au/emotional-support-water-bottle-girlies-tiktok-trend">emotional support</a> as well as hydration.</p> <p>Having a water bottle you enjoy using can go a long way in helping you keep up your fluids during the day.</p> <p>Pay attention to the material of the water bottle and use one that helps you form good habits. Some people prefer metal water bottles as they can keep water cooler for longer (others feel like they are camping). Some prefer glass bottles because the water isn’t affected by any flavours from the container (others fear breaking the glass).</p> <p>Consider the practical aspects, too: Will it fit in your bag? Will it be light enough to carry with you? Can you “chug” on it when you’re exceptionally thirsty? Does the lid require screwing? How durable is it in preventing leaks? Do some <a href="https://www.marthastewart.com/7842071/best-water-bottles-hydration">homework</a> on your water bottle, an essential accessory!<!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><em><a href="https://theconversation.com/profiles/lauren-ball-14718">Lauren Ball</a>, Professor of Community Health and Wellbeing, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a> and <a href="https://theconversation.com/profiles/emily-burch-438717">Emily Burch</a>, Dietitian and Researcher, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a></em></p> <p><em>Image credits: Shutterstock </em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/dont-like-drinking-plain-water-10-healthy-ideas-for-staying-hydrated-this-summer-191859">original article</a>.</em></p> </div>

Body

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How can I make summer style part of my self-care routine?

<p>Taking care of yourself doesn’t have to be complicated. With summer just around the corner, it’s a great time to refresh your self-care routine with small changes that help you feel your best. </p> <p>One easy way to do this is by choosing clothing made from breathable Australian cotton and linen. They keep you cool, feel great against the skin and make looking put-together effortless. In this guide, we’ll show you how your summer wardrobe can fit into your self-care routine, featuring pieces from Sussan, a retailer known for easy, comfortable styles that last all season.</p> <p><strong>Simplify your day with matching sets</strong></p> <p><img src="https://oversixtydev.blob.core.windows.net/media/2024/11/Sussan01.jpg" alt="" width="1280" height="720" /></p> <p>A big part of self-care is simplifying your day as much as possible, and that includes your clothing choices. Summer is the time for relaxed, unfussy outfits that don’t require a lot of planning. <a href="https://www.sussan.com.au/clothing/sets" target="_blank" rel="noopener">Matching sets</a> are perfect for this because they take away the guesswork. Everything is already coordinated, which saves you time and makes your mornings easier.</p> <p>A soft denim skirt made from Australian cotton paired with a lightweight tee is breathable and practical for warm days. These pieces help you stay comfy when running errands or enjoying time with friends.</p> <p><strong>Stay cool all day in linen dresses</strong></p> <p><img src="https://oversixtydev.blob.core.windows.net/media/2024/11/Sussan04.jpg" alt="" width="1280" height="720" /></p> <p><a href="https://www.sussan.com.au/clothing/linen/linen-dresses" target="_blank" rel="noopener">Linen dresses</a> are an easy go-to for keeping cool and comfortable during hot summer days. The fabric is light, breathable and perfect for warm weather, which is why it’s a great fit for everything from weekend barbecues to beach walks. With styles like shirt dresses, minis, midis and maxis, there’s plenty of variety to match whatever the day calls for.</p> <p>Styling a linen dress is also simple and practical. With the right accessories, it can easily shift from a casual daytime outfit to an evening look. Style it with a hat for an easy brunch outfit or a trip to the markets. To dress it up, add a light jacket and some jewellery, like a pair of earrings or a statement necklace.</p> <p><strong>Unwind with breathable loungewear</strong></p> <p><img src="https://oversixtydev.blob.core.windows.net/media/2024/11/Sussan03.jpg" alt="" width="1280" height="720" /></p> <p>Practising self-care through summer style can be as simple as choosing clothes that help you relax and feel comfy all day long. This is easy to achieve with loungewear made from pure linen and linen blends.</p> <p>Look for lightweight loungewear tops, pants and shorts that feel soft on the skin and keep you cool as you move through your day. For a summer-ready look, pair a linen top with matching shorts for warm afternoons, or switch to linen pants for a little more coverage on cooler evenings.</p> <p><strong>End your day in Australian cotton sleepwear</strong></p> <p>Winding down at the end of the day feels easier when you’re wearing clothes that make you feel calm and cosy. <a href="https://www.sussan.com.au/shop-the-edit-sleepwear/australian-cotton-sleepwear" target="_blank" rel="noopener">Australian cotton sleepwear</a> in soft, breathable fabrics is a great option as it sits lightly on the skin and keeps you comfortable during warm nights.</p> <p>You can mix and match Australian cotton pyjama tops, tanks, shorts and pants or wear nighties to match your mood and comfort level. These versatile let you settle in and enjoy quiet evenings at home.</p> <p><strong>Wear what feels good this summer</strong></p> <p><strong><img src="https://oversixtydev.blob.core.windows.net/media/2024/11/Sussan02.jpg" alt="" width="1280" height="720" /></strong></p> <p>Updating your summer wardrobe with comfy, breathable pieces is an easy way to bring self-care into your routine. With matching sets, linen dresses, loungewear and soft Australian cotton sleepwear from <a href="https://www.sussan.com.au/" target="_blank" rel="noopener">Sussan</a>, you can have more time to focus on yourself and enjoy the season your way.</p> <p>Start refreshing your wardrobe with these pieces that feel good to wear, and use your summer style to prioritise self-care!</p> <p><em>Images: Sussan</em></p> <p><em>This is a sponsored article produced in partnership with Sussan</em></p>

Beauty & Style

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How to buy a good pair of sunglasses

<div class="theconversation-article-body"><em><a href="https://theconversation.com/profiles/jacobo-garcia-queiruga-1496353">Jacobo García Queiruga</a>, <a href="https://theconversation.com/institutions/universidade-de-santiago-de-compostela-2533">Universidade de Santiago de Compostela</a> and <a href="https://theconversation.com/profiles/veronica-noya-padin-1529488">Verónica Noya Padín</a>, <a href="https://theconversation.com/institutions/universidade-de-santiago-de-compostela-2533">Universidade de Santiago de Compostela</a></em></p> <p>Nowadays you can buy a cheap pair of sunglasses just about anywhere – from supermarkets and petrol stations to corner shops and online fashion retailers, but such ubiquity may prompt doubts as to the protection they can offer. While their lenses usually meet certain minimum UV protection requirements, their quality in other respects, such as visual clarity, is dismal.</p> <p>Opticians, however, are governed by national health regulations, meaning that they have to meet higher standards such as the <a href="https://single-market-economy.ec.europa.eu/single-market/ce-marking_en">CE</a> and <a href="https://www.gov.uk/guidance/using-the-ukca-marking">UKCA</a> marks. Professional opticians are therefore much better equipped to help customers find sunglasses that not only meet their practical demands, but which are also comfortable and well suited to their facial features.</p> <h2>Rules for protection</h2> <p><a href="https://www.iso.org/obp/ui/en/#iso:std:iso:12312:-1:ed-2:v1:en">European law</a> classifies sunglass lenses as “personal protective equipment”, outlining five levels of protection. Category 0 lenses allow 80-100% of light through, while those in category 4 only let 3-8% through, meaning they are not suitable for driving. Category 3 is the most commonly used, as they are appropriate for most situations, including driving.</p> <p>So, do darker lenses protect you better? The short answer is: not necessarily. The degree of light absorption depends on how and where they will be used: category 4 lenses are designed for extremely bright areas like high mountains or deserts, but may actually reduce your visibility in other situations.</p> <p>However, all sunglasses that meet the established standards will protect your eyes from UV radiation.</p> <h2>Quality of vision</h2> <p>Wearing sunglasses can give the feeling that your vision is impeded. This is because a tinted lens selectively filters light: it lets in one type of radiation and limits another. Three concepts can help us understand how this works, and why it matters.</p> <p>First up is <strong>visual acuity</strong>. This is the term used to measure how “sharply” we see, and it is tested by asking patients to read increasingly small letters that appear on a screen or wall chart, with an ideal result around 100%. However, this test is performed with black letters on a well lit white background, so it does not take into account how visual quality may vary in other lighting conditions.</p> <p><strong>Contrast sensitivity</strong> is defined as the ability to differentiate objects from the surrounding background. It is, for instance, more difficult to distinguish black letters on grey backgrounds than on white backgrounds.</p> <p>Lastly, we have <strong>refractive errors</strong>, which affect both <strong>visual acuity</strong> and <strong>contrast sensitivity</strong>. These are what cause astigmatisms and make us long or short sighted. Wearing non-prescription sunglasses when suffering from any of these conditions can make vision even worse than it would be without them.</p> <h2>Colour matters</h2> <p>With all this in mind, we should also address the common question of lens colour. While colour does not affect protection, <a href="https://www.researchgate.net/publication/11320153_Effect_of_variable_tinted_spectacle_lenses_on_visual_performance_in_control_subjects">it can affect contrast and the feeling of brightness</a>, because each colour filters out a different wavelength of light.</p> <p><a href="https://www.researchgate.net/publication/11320153_Effect_of_variable_tinted_spectacle_lenses_on_visual_performance_in_control_subjects">Grey lenses filter out all wavelengths of light</a>, while tints such as brown or green have a different effect on light absorption. This means that <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10699545/">visual perception</a> tends to be brighter through a brown lens, very dark through grey ones, and more natural through green ones.</p> <h2>Plastic or glass lenses?</h2> <p>Colour isn’t the only thing that affects quality of vision: we also have to pay attention to what the lenses are made of. While they are most commonly made of specialised plastics – known as organic lenses – you can also find glass ones, known as mineral lenses.</p> <p>These two materials are not the same. Organic lenses are lighter and stronger, while mineral lenses are more scratch resistant and are less prone to colour distortion. This means that mineral lenses offer greater quality of vision.</p> <h2>What about polarised lenses?</h2> <p>Polarised lenses block light that reaches the eye at a certain angle after reflecting off a surface such as a road or water, thus reducing glare. They are particularly suited to driving or spending time around water.</p> <p>However, they can be unsuitable in certain situations. For example, they block light from screens, making them appear darker or even completely black, meaning devices often have to be rotated to improve visibility. They are also not ideal for certain winter sports: by eliminating glare they make it very easy to miss icy patches on the ground.</p> <h2>Other features</h2> <p>Lastly, there are certain design features that we cannot overlook when choosing a pair of sunglasses.</p> <p><strong>Gradient lenses</strong> are darker at the top, and graduate down to a lighter tint at the bottom – they usually absorb around 85% of light in their darkest area, and 10% in the lightest. These lenses are stylish, but that does not affect their protection against UV rays. That said, they might be better suited to cloudy conditions, and on a bright summer day they may not be the best option.</p> <p><strong>Reflective lenses</strong> have a layer on their outer surface that reflects light and enhances protection. Unfortunately, this treatment is easily damaged or scratched.</p> <p>Lenses with <strong>anti reflective coating on the inside of the lens</strong> provide greater clarity of vision by eliminating light reflected from behind the wearer. This treatment is usually applied to large sunglasses, or glasses with optically very high quality lenses.</p> <p>In the event of any doubt, the best possible advice is to speak to your optician or optometrist to find the sunglasses that best meet your needs.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/229953/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><em><a href="https://theconversation.com/profiles/jacobo-garcia-queiruga-1496353">Jacobo García Queiruga</a>, Profesor Interino en el Área de Optometría (OD, MSc, PhD), <a href="https://theconversation.com/institutions/universidade-de-santiago-de-compostela-2533">Universidade de Santiago de Compostela</a> and <a href="https://theconversation.com/profiles/veronica-noya-padin-1529488">Verónica Noya Padín</a>, Investigadora predoctoral - Área de Optometría, <a href="https://theconversation.com/institutions/universidade-de-santiago-de-compostela-2533">Universidade de Santiago de Compostela</a></em></p> <p><em>Image credits: Shutterstock </em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/how-to-buy-a-good-pair-of-sunglasses-229953">original article</a>.</em></p> </div>

Beauty & Style

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Daylight savings is about to start. But why do the days get longer?

<div class="theconversation-article-body"><em><a href="https://theconversation.com/profiles/laura-nicole-driessen-892965">Laura Nicole Driessen</a>, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a></em></p> <p>The days are getting longer and in Australia, the switch to daylight saving time is almost upon us (for about 70% of the population, anyway).</p> <p>But why do we have longer days in summer and shorter days in winter?</p> <h2>It’s all about the tilt</h2> <p>Earth goes around the Sun in an almost circular orbit. But not everything is lined up perfectly. Earth’s axis is tilted by 23.44 degrees relative to its orbit around the Sun.</p> <p>Imagine Earth’s orbit as a flat frisbee with the Sun in the middle and Earth as a ball on a stick going around the edge.</p> <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/623235/original/file-20241003-16-xourdg.jpg?ixlib=rb-4.1.0&amp;q=45&amp;auto=format&amp;w=1000&amp;fit=clip"><img src="https://images.theconversation.com/files/623235/original/file-20241003-16-xourdg.jpg?ixlib=rb-4.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/623235/original/file-20241003-16-xourdg.jpg?ixlib=rb-4.1.0&amp;q=45&amp;auto=format&amp;w=600&amp;h=400&amp;fit=crop&amp;dpr=1 600w, https://images.theconversation.com/files/623235/original/file-20241003-16-xourdg.jpg?ixlib=rb-4.1.0&amp;q=30&amp;auto=format&amp;w=600&amp;h=400&amp;fit=crop&amp;dpr=2 1200w, https://images.theconversation.com/files/623235/original/file-20241003-16-xourdg.jpg?ixlib=rb-4.1.0&amp;q=15&amp;auto=format&amp;w=600&amp;h=400&amp;fit=crop&amp;dpr=3 1800w, https://images.theconversation.com/files/623235/original/file-20241003-16-xourdg.jpg?ixlib=rb-4.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;h=503&amp;fit=crop&amp;dpr=1 754w, https://images.theconversation.com/files/623235/original/file-20241003-16-xourdg.jpg?ixlib=rb-4.1.0&amp;q=30&amp;auto=format&amp;w=754&amp;h=503&amp;fit=crop&amp;dpr=2 1508w, https://images.theconversation.com/files/623235/original/file-20241003-16-xourdg.jpg?ixlib=rb-4.1.0&amp;q=15&amp;auto=format&amp;w=754&amp;h=503&amp;fit=crop&amp;dpr=3 2262w" alt="Diagram of Earth's rotation around the sun." /></a><figcaption><span class="caption">Earth goes around the Sun in an almost circular orbit.</span> <span class="attribution"><a class="source" href="https://www.shutterstock.com/image-vector/earths-orbit-earth-rotation-around-sun-2441275921">Angela Cini/Shutterstock</a></span></figcaption></figure> <p>If Earth’s axis wasn’t tilted (if its tilt was zero degrees) the stick would be exactly perpendicular to the frisbee. If you grab that perpendicular stick and tip it 23.44 degrees sideways, that’s what Earth’s tilt looks like now.</p> <p>As Earth orbits the Sun, the tilt of the stick does not rotate relative to the Sun. If you were in outer space looking at the Sun and you watched from the exact same position for a whole year, you would see Earth go around the Sun while the stick stayed tilted the same direction.</p> <p>In other words, if the top of the stick was pointing to the right when you started watching Earth go around the Sun, it would stay pointing to the right the whole way around.</p> <p>This tilt gives us longer days in summer and shorter days in winter. Let’s set up the scenario so the Northern Hemisphere is the top of the planet and the Southern Hemisphere is the bottom of the planet.</p> <p>When Earth is on one side of the Sun, the top of the stick is pointed towards the Sun. This is summer in the Northern Hemisphere and winter in the Southern Hemisphere. Six months later, when Earth is on the other side of the Sun, the bottom of the stick is pointed towards the Sun – and the seasons are reversed.</p> <h2>Solstices and equinoxes</h2> <p>Those two points, when the top of the stick is pointing directly towards the Sun or directly away from the Sun, are the solstices. They are the longest and shortest days of the year, depending on your hemisphere.</p> <p>The shortest day of 2024 in Australia was June 21. Looking forward to sunnier times, the longest day of the year in 2024 will be December 21.</p> <p>In between the summer and winter solstice, we have the equinoxes – when days and nights are almost exactly the same length. Those are the days when the stick through Earth is “side-on” to the Sun. The equinox is also the day when the Sun passes directly over Earth’s equator. In 2024 this happened on March 20 at 2:06pm AEDT and September 22 at 10:43pm AEST.</p> <p>That means that since September 22, days have been getting longer than nights in the Southern Hemisphere.</p> <h2>What does daylight savings do?</h2> <p>Earth’s tilt means the Sun both rises earlier and sets later as we head towards summer. When the clocks (in some states) switch to daylight saving time, people in these states all get one hour less of sleep. However, the total length of the day doesn’t change just because we changed our clocks.</p> <p>For me, daylight savings means I need an extra cup of coffee in the morning for about a week before I adjust to the daylight savings-lag (like jet lag, but without the fun of travel).</p> <p>What it really gives us is more daylight in the evening, instead of more daylight in the morning. If you’re already a morning person, this isn’t the way to go. But if you prefer to have a long dinner in the summer sun it’s ideal.</p> <h2>Has it always been this way?</h2> <p>Earth’s axis hasn’t always been tilted at 23.44 degrees. It cycles from a minimum 22.1 degree tilt to a maximum 24.5 degree tilt and back again once every approximately 41,000 years.</p> <p>Earth’s axis also “precesses”, where the stick through it draws a circle once every approximately 26,000 years. You can see this in the animation below.</p> <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/622704/original/file-20241001-16-lh8pl9.gif?ixlib=rb-4.1.0&amp;q=45&amp;auto=format&amp;w=1000&amp;fit=clip"><img src="https://images.theconversation.com/files/622704/original/file-20241001-16-lh8pl9.gif?ixlib=rb-4.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/622704/original/file-20241001-16-lh8pl9.gif?ixlib=rb-4.1.0&amp;q=45&amp;auto=format&amp;w=600&amp;h=600&amp;fit=crop&amp;dpr=1 600w, https://images.theconversation.com/files/622704/original/file-20241001-16-lh8pl9.gif?ixlib=rb-4.1.0&amp;q=30&amp;auto=format&amp;w=600&amp;h=600&amp;fit=crop&amp;dpr=2 1200w, https://images.theconversation.com/files/622704/original/file-20241001-16-lh8pl9.gif?ixlib=rb-4.1.0&amp;q=15&amp;auto=format&amp;w=600&amp;h=600&amp;fit=crop&amp;dpr=3 1800w, https://images.theconversation.com/files/622704/original/file-20241001-16-lh8pl9.gif?ixlib=rb-4.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;h=754&amp;fit=crop&amp;dpr=1 754w, https://images.theconversation.com/files/622704/original/file-20241001-16-lh8pl9.gif?ixlib=rb-4.1.0&amp;q=30&amp;auto=format&amp;w=754&amp;h=754&amp;fit=crop&amp;dpr=2 1508w, https://images.theconversation.com/files/622704/original/file-20241001-16-lh8pl9.gif?ixlib=rb-4.1.0&amp;q=15&amp;auto=format&amp;w=754&amp;h=754&amp;fit=crop&amp;dpr=3 2262w" alt="A gif of the Earth wobbling in a circle on its axis." /></a><figcaption><span class="caption">Demonstration of the precession of Earth’s axis.</span> <span class="attribution"><a class="source" href="https://science.nasa.gov/resource/axial-precession-wobble/">NASA/JPL-Caltech</a></span></figcaption></figure> <p>The length of a day on Earth hasn’t always been the same, either.</p> <p>At the moment, the length of a day is nearly exactly 24 hours. But it’s shifting all the time by tiny amounts. This is tracked very closely by a system of telescopes and satellites. These systems measure “<a href="https://ggos.org/item/earth-orientation-parameter/#:%7E:text=Accordingly%2C%20the%20EOP%20describe%20the,as%20tides%20and%20continental%20drift">Earth orientation parameters</a>” that describe Earth’s exact orientation compared to the position of stars in the sky.</p> <p>These are important to astronomers because the exact location of our telescopes is important for creating accurate maps of the sky. On top of all of this, the gravitational drag from the Moon causes days to become longer by around 2.3 milliseconds every 100 years. A few billion years ago, Earth’s day was a lot shorter – <a href="https://www.earthscope.org/news/a-day-is-not-always-24-hours-how-earths-shifting-systems-cause-day-length-variation/#:%7E:text=Billions%20of%20years%20ago%2C%20the,to%20the%20day%20every%20century">only 19 hours long</a>.</p> <p>Even though some of us are losing an hour of sleep this weekend, at least we get to enjoy 2.3 milliseconds longer every day than our great – and great-great – grandparents did.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/240221/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><a href="https://theconversation.com/profiles/laura-nicole-driessen-892965"><em>Laura Nicole Driessen</em></a><em>, Postdoctoral researcher in radio astronomy, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a></em></p> <p><em>Image credits: Shutterstock </em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/daylight-savings-is-about-to-start-but-why-do-the-days-get-longer-240221">original article</a>.</em></p> </div>

Domestic Travel

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“Song of the summer”: Karl Stefanovic appears in wild 50th birthday music video

<p>Karl Stefanovic has confused and delighted fans in equal measure with the release of a bizarre music video to celebrate his 50th birthday. </p> <p>The <em>Today Show</em> host teamed up with singer Keli Holiday, also known as one half of music duo Peking Duk, to star in a cover of Dolly Parton and Kenny Rogers’ 1983 classic <em>Islands In The Stream</em>.</p> <p>The newly formed duo performed the song with their silk shirts blowing in the wind in full 1980s music video style, showing off their chests. </p> <p>Holiday took to his Instagram on Wednesday to tease the musical team up, sharing screenshots from private messages in which Stefanovic reached out to say, "I'm prepared to do a duet with you". </p> <blockquote class="instagram-media" style="background: #FFF; border: 0; border-radius: 3px; box-shadow: 0 0 1px 0 rgba(0,0,0,0.5),0 1px 10px 0 rgba(0,0,0,0.15); margin: 1px; max-width: 540px; min-width: 326px; padding: 0; width: calc(100% - 2px);" data-instgrm-permalink="https://www.instagram.com/reel/C_bqOAGhfTP/?utm_source=ig_embed&amp;utm_campaign=loading" data-instgrm-version="14"> <div style="padding: 16px;"> <div style="display: flex; flex-direction: row; align-items: center;"> <div style="background-color: #f4f4f4; border-radius: 50%; flex-grow: 0; height: 40px; margin-right: 14px; width: 40px;"> </div> <div style="display: flex; flex-direction: column; flex-grow: 1; justify-content: center;"> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 100px;"> </div> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; width: 60px;"> </div> </div> </div> <div style="padding: 19% 0;"> </div> <div style="display: block; height: 50px; margin: 0 auto 12px; width: 50px;"> </div> <div style="padding-top: 8px;"> <div style="color: #3897f0; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: 550; line-height: 18px;">View this post on Instagram</div> </div> <div style="padding: 12.5% 0;"> </div> <div style="display: flex; flex-direction: row; margin-bottom: 14px; align-items: center;"> <div> <div style="background-color: #f4f4f4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(0px) translateY(7px);"> </div> <div style="background-color: #f4f4f4; height: 12.5px; transform: rotate(-45deg) translateX(3px) translateY(1px); width: 12.5px; flex-grow: 0; margin-right: 14px; margin-left: 2px;"> </div> <div style="background-color: #f4f4f4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(9px) translateY(-18px);"> </div> </div> <div style="margin-left: 8px;"> <div style="background-color: #f4f4f4; border-radius: 50%; flex-grow: 0; height: 20px; width: 20px;"> </div> <div style="width: 0; height: 0; border-top: 2px solid transparent; border-left: 6px solid #f4f4f4; border-bottom: 2px solid transparent; transform: translateX(16px) translateY(-4px) rotate(30deg);"> </div> </div> <div style="margin-left: auto;"> <div style="width: 0px; border-top: 8px solid #F4F4F4; border-right: 8px solid transparent; transform: translateY(16px);"> </div> <div style="background-color: #f4f4f4; flex-grow: 0; height: 12px; width: 16px; transform: translateY(-4px);"> </div> <div style="width: 0; height: 0; border-top: 8px solid #F4F4F4; border-left: 8px solid transparent; transform: translateY(-4px) translateX(8px);"> </div> </div> </div> <div style="display: flex; flex-direction: column; flex-grow: 1; justify-content: center; margin-bottom: 24px;"> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 224px;"> </div> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; width: 144px;"> </div> </div> <p style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; line-height: 17px; margin-bottom: 0; margin-top: 8px; overflow: hidden; padding: 8px 0 7px; text-align: center; text-overflow: ellipsis; white-space: nowrap;"><a style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: normal; line-height: 17px; text-decoration: none;" href="https://www.instagram.com/reel/C_bqOAGhfTP/?utm_source=ig_embed&amp;utm_campaign=loading" target="_blank" rel="noopener">A post shared by keli holiday (@keliholiday)</a></p> </div> </blockquote> <p>“I shared this sentiment online to see if the people shared that same yearning for a Keli-Karl duet and the response was an overwhelming ‘yes’. What you hear and see here is raw, unadulterated fun. A gift from a man on his 50th birthday. That’s how giving Karl is. Enjoy it. Revel in it. We hope you love it as much as we loved making it,” said Holiday.</p> <p>The response to the video has been mostly positive, while some people couldn't contain their confusion. </p> <p>“This is so Australian, it should be used as a tourism advertisement,” reads one top-rated comment read. </p> <p>“Just dropped to my knees in Aldi,” commented one fellow Aussie musician, while another called it the "Song of the year."</p> <p>Another person commented, "What is going on?? I feel like I’ve just woken up from a bender at 3am with <em>Rage</em> playing hilariously bad 80’s videos…", while Karl's wife Jasmine added, "You need to wear eyeliner all the time now. Suits you!"</p> <p><em>Image credits: Instagram</em></p>

Music

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Summer’s over, so how much sun can (and should) I get?

<p><em><a href="https://theconversation.com/profiles/katie-lee-228942">Katie Lee</a>, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a> and <a href="https://theconversation.com/profiles/rachel-neale-891731">Rachel Neale</a>, <a href="https://theconversation.com/institutions/qimr-berghofer-medical-research-institute-1811">QIMR Berghofer Medical Research Institute</a></em></p> <p>As we slide of out summer, you might be wondering how careful you need to be about sun exposure. Excessive exposure causes <a href="https://www.cancer.org.au/about-us/policy-and-advocacy/prevention-policy/national-cancer-prevention-policy/skin-cancer-statistics-and-issues/uv-radiation">skin cancer</a>, but sun exposure also has <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9976694/">benefits</a>. How do you balance the two?</p> <p>A new <a href="https://www.sciencedirect.com/science/article/pii/S1326020023052949?via%3Dihub">position statement</a> from cancer, bone health and other experts <a href="https://www.assc.org.au/wp-content/uploads/2023/01/Sun-Exposure-Summit-PositionStatement_V1.9.pdf">aims to help</a> Australians balance the good and bad effects of sun exposure by taking into account their skin colour, risk of skin cancer, and where they live.</p> <h2>What are the benefits of sunlight?</h2> <p>Ultraviolet (UV) radiation (the wavelengths in sunlight that cause skin cancer) also leads to vitamin D production. <a href="https://dermnetnz.org/topics/vitamin-d">Vitamin D</a> is very important for maintaining strong bones, and is likely to have <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9976694/">multiple other health benefits</a>.</p> <p>But vitamin D probably isn’t the whole story. Sunshine, including UV radiation, is thought to affect health in <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9976694/">other ways</a> such as improving our mood and reducing the risk of autoimmune diseases and infections. So for many people, avoiding the sun and taking a vitamin D supplement may not be the best approach.</p> <h2>How much time does it take to make vitamin D?</h2> <p>It’s complicated, but for most people and most of the year across most of Australia, it’s a lot less than you think.</p> <p>The <a href="https://onlinelibrary.wiley.com/doi/10.1111/php.13854">amount of time needed</a> depends on the amount of skin covered by clothing and the intensity of UV radiation (indicated by the UV index). More skin exposed and higher UV index equate to less time needed.</p> <p>Both the UV index and the amount of the year that UV radiation is high increase as you get closer to the equator. In summer, all of Australia is bathed in sunshine. But in winter, opposite ends of the country have <a href="https://onlinelibrary.wiley.com/doi/10.1111/php.13854">very different exposures</a>.</p> <p>In summer, everybody except those with deeply pigmented skin can make enough vitamin D in <a href="https://www.sciencedirect.com/science/article/pii/S1326020023052949?via%3Dihub">just five minutes</a> between 9am and 3pm, anywhere in Australia, provided they are wearing shorts and a T-shirt.</p> <p>In winter it’s a different story. In <a href="https://www.sciencedirect.com/science/article/pii/S1326020023052949?via%3Dihub">Darwin and Brisbane</a>, 5–10 minutes between 10am and 3pm will do the trick, but in <a href="https://www.sciencedirect.com/science/article/pii/S1326020023052949?via%3Dihub">Hobart</a>, factoring in winter clothing, it will take nearly an hour in the middle of the day.</p> <p>Hover your mouse over the lines below to see the length of exposure needed at specific times of day.</p> <p><iframe id="X5szQ" class="tc-infographic-datawrapper" style="border: none;" src="https://datawrapper.dwcdn.net/X5szQ/" width="100%" height="400px" frameborder="0"></iframe></p> <p>Staying out for longer than needed doesn’t necessarily make more vitamin D, but it <a href="https://www.sciencedirect.com/science/article/pii/S1326020023052949?via%3Dihub#bib25">does cause skin damage</a>.</p> <h2>Hang on, what about those with darker skin?</h2> <p>People with deeply pigmented, brown to black skin accumulate both vitamin D and DNA damage at a much slower rate than people with lighter skin tones.</p> <p>When UV radiation hits a DNA strand, it causes the DNA to become distorted. If the distortion isn’t fixed, it will cause a mistake when the DNA is copied for a new cell, causing a permanent mutation that sometimes leads to cancer.</p> <p>Melanin, the brown pigment in the skin, absorbs UV photons before that can happen, and the high melanin content in the darkest skin tones provides <a href="https://faseb.onlinelibrary.wiley.com/doi/full/10.1096/fj.201701472R">60 times</a> as much UV protection as the small amount in very fair skin.</p> <p>The flip side is the risk of vitamin D deficiency is much higher than the risk of skin cancer.</p> <p>The new statement accounts for this by putting people into <a href="https://www.sciencedirect.com/science/article/pii/S1326020023052949?via%3Dihub">three groups</a> based on their risk of skin cancer, with specialised advice for each group.</p> <h2>Highest skin cancer risk</h2> <p>This includes people with very pale skin that burns easily and tans minimally, but also people with darker white or olive skin who can tan easily but have extra skin cancer risk factors because they:</p> <ul> <li>have had <strong>skin cancer</strong> before</li> <li>have a <strong>family history</strong> of melanomas</li> <li>have many <strong>moles</strong></li> <li>are taking <strong>immunosuppressant</strong> medications.</li> </ul> <p>For these people, the harms of sun exposure almost certainly <a href="https://www.sciencedirect.com/science/article/pii/S1326020023052949?via%3Dihub">outweigh the benefits</a>.</p> <p>These people should wear sunscreen every day the <a href="https://www.arpansa.gov.au/our-services/monitoring/ultraviolet-radiation-monitoring/ultraviolet-radiation-index">UV index</a> is forecast to get to <a href="https://www.assc.org.au/peak-health-bodies-recommend-new-approach-to-sunscreen-use/">three or more</a>, and use the <a href="https://www.cancer.org.au/cancer-information/causes-and-prevention/sun-safety/be-sunsmart">five sunsmart steps</a> whenever the UV index is above three:</p> <ul> <li><strong>slip</strong> on clothing covering as much of the body as possible</li> <li><strong>slop</strong> on SPF30+ sunscreen on areas that can’t be covered up</li> <li><strong>slap</strong> on a hat</li> <li><strong>seek</strong> shade</li> <li><strong>slide</strong> on sunglasses.</li> </ul> <p>They shouldn’t spend time outdoors deliberately to make vitamin D, but should discuss vitamin D supplements with their doctor.</p> <h2>Intermediate skin cancer risk</h2> <p>This means people with dark white/olive skin that sometimes burns but tans easily, and who don’t have other skin cancer risk factors.</p> <p>These people should still apply sunscreen as part of their usual routine on all days when the UV index is forecast to get to <a href="https://www.assc.org.au/peak-health-bodies-recommend-new-approach-to-sunscreen-use/">three or more</a>, but they can spend enough time outdoors to get a “dose” of vitamin D on most days of the week.</p> <p>Once the time needed for their vitamin D dose is up, they should also use the <a href="https://www.cancer.org.au/cancer-information/causes-and-prevention/sun-safety/be-sunsmart">slip-slop-slap-seek-slide</a> steps to avoid accumulating DNA damage.</p> <p>If they’re unable to do this because of health or lifestyle factors, like being housebound, working night shifts, or always covering up with clothing, they should see their doctor about whether they need vitamin D supplements.</p> <h2>Lowest skin cancer risk</h2> <p>This covers people with deeply pigmented brown to black skin that rarely or never burns.</p> <p>These people can <a href="https://www.sciencedirect.com/science/article/pii/S1326020023052949?via%3Dihub#bib14">safely spend enough time outdoors</a> to make vitamin D and get the other benefits of sunshine. But because more time is needed, it can be difficult, particularly when the weather is cold. Vitamin D supplements might be needed.</p> <p>They don’t need to routinely protect their skin, but might need to <a href="https://www.cancer.org.au/cancer-information/causes-and-prevention/sun-safety/be-sunsmart">slip-slop-slap-seek-slide</a> if they are outdoors for more than two hours.</p> <h2>How do I get the feel-good effects of sunshine?</h2> <p>Spending time outdoors in the early morning is the best way to get the <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9976694/">feel-good effects</a> of sunshine. An early morning walk is a great idea for all of us, but it won’t make vitamin D.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/224144/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><em><a href="https://theconversation.com/profiles/katie-lee-228942">Katie Lee</a>, PhD Candidate, Dermatology Research Centre, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a> and <a href="https://theconversation.com/profiles/rachel-neale-891731">Rachel Neale</a>, Principal research fellow, <a href="https://theconversation.com/institutions/qimr-berghofer-medical-research-institute-1811">QIMR Berghofer Medical Research Institute</a></em></p> <p><em>Image credits: Getty Images </em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/summers-over-so-how-much-sun-can-and-should-i-get-224144">original article</a>.</em></p>

Body

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Heartless theft from "Garden of Little Angels"

<p>In a despicable act of heartlessness, dozens of bronze plaques dedicated to children have been stolen from a memorial park in Melbourne's southwest. The theft not only deprives grieving families of precious mementos but also desecrates a sacred space meant to honour the memory of lost loved ones.</p> <p>Victoria police were alerted to the crime when it was discovered that 75 plaques had been taken from Altona Memorial Park on Doherty’s Road. These plaques, erected in the "Garden of Little Angels", were loving tributes from families who had lost children, serving as symbols of remembrance and healing for those who visit the park.</p> <p>The theft, which occurred sometime between March 12 and 13, has left the community shocked and appalled. It is a violation not only of property but of the sanctity of a space meant for solace and reflection. The perpetrators have callously disregarded the pain of grieving families and the significance of the memorial to the community.</p> <p>In response to this reprehensible act, detectives have issued a warning to scrap metal dealers in the area to remain vigilant against any attempts to sell the stolen plaques. These plaques, though they may hold some monetary value as scrap metal, are priceless to the families who placed them in the memorial park, with their sentimental worth far outweighing any material gain.</p> <p>The police are actively investigating the theft and are urging anyone with information to come forward. The return of the stolen plaques to their rightful place is paramount in restoring a sense of peace and closure to the families affected by this crime.</p> <p><em>Images: Altona Memorial Park</em></p>

Legal

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Why you should travel solo this summer

<p><em><a href="https://theconversation.com/profiles/claire-mccamley-446927">Claire McCamley</a>, <a href="https://theconversation.com/institutions/university-of-huddersfield-1226">University of Huddersfield</a></em></p> <p>When you think about booking a summer holiday, you might think of trips with partners, friends or family. The idea of going on holiday alone can be daunting, or even unappealing. It raises all kinds of questions – who will you talk to? Who will you eat with? Will you be safe?</p> <p>There has long been a <a href="https://www.tandfonline.com/doi/abs/10.1080/0267257X.2015.1073170?journalCode=rjmm20">stigma against solo consumption</a>. Societal norms encourage us to be with someone – leisure experiences are billed as something to <a href="https://www.emerald.com/insight/content/doi/10.1108/IJCHM-06-2019-0584/full/pdf?title=dining-alone-improving-the-experience-of-solo-restaurant-goers">share with others</a>. There may also be a level of guilt or self-indulgence associated with solo travel, feeling as if you are shirking responsibility or abandoning time with family.</p> <p>An increase in <a href="https://www.euromonitor.com/article/single-person-households-to-record-128-percent-growth-by-2030">single-person households</a>, however, means the hospitality industry is now serving solo consumers in addition to families and couples. The continuously <a href="https://www.forbes.com/sites/adigaskell/2020/05/11/is-a-blurred-work-life-balance-the-new-normal/?sh=5c9db6341813">blurred line</a> between work and play, particularly for Millennials and younger generations, makes it easier to work remotely or travel as part of our jobs. We are more transient than ever, and have more opportunities to work and travel alone without feeling completely disconnected from the rest of our lives.</p> <p>In recent years, people have been <a href="https://www.telegraph.co.uk/travel/comment/whats-behind-the-rise-in-solo-travel/">increasingly</a> travelling alone – including younger vacationers. They also share their experiences to a large audience on social media – the hashtag #SoloTravel has over 7 million posts associated with it on Instagram. Solo travellers are taking part in the growing <a href="https://www.futuresplatform.com/blog/solo-economy-new-consumption-patterns">solo economy</a> – new products and services targeting the lone consumer.</p> <p>Hotels, <a href="https://www.ncl.com/uk/en/freestyle-cruise/solo-cruising">cruises</a>, restaurants, tourism <a href="https://www.flashpack.com/">companies</a> and festivals are showing how design, staff and technology can be tailored to accommodate – and even encourage – solo consumption in travel. <a href="https://journals.sagepub.com/doi/10.1177/14705931211017184">Our research</a> into the experience of solo consumers in coffee shops offers insight into how solo consumption can be as pleasurable and fulfilling as going with a partner or friend. Through <a href="https://www.research.ucsb.edu/sites/default/files/RD/docs/FREEWRITING-by-Peter-Elbow.pdf">freewriting</a> exercises, these consumers shared their own experiences. Their words offer some reasons you should try it too.</p> <h2>Be together, alone</h2> <p>Our research participants highlighted key factors that help them enjoy their solo experience – high seats and window views allowing them to sit back and observe others’ lives without any direct interaction or connection. You don’t need to arrive with others to feel part of a social environment. Alone in a crowded square or on a busy beach, the proximity of other people and their conversations can be a source of comfort, distraction or even entertainment.</p> <blockquote> <p>The seat is important -– I like the window especially a stool and “shelf” table facing out … I see people, imagine their lives, see cars and life pass by. I watch other customers, I watch the street out the window, the cliché of “watching the world pass by”. The setting, context and environment of the café are important to that moment of pause.</p> </blockquote> <h2>Take time for yourself</h2> <p>Being alone can be a <a href="https://journals.sagepub.com/doi/pdf/10.1177/14705931211017184">therapeutic experience</a>, a time to process thoughts, feelings and emotions and leave you ready to tackle the world again. Perhaps take time to write, draw or practice another creative activity in your own time. Bask in your own thoughts without feeling pressure to please anyone else or force a conversation.</p> <blockquote> <p>Sitting alone with my thoughts can be a comforting experience; picking a seat, getting comfy…I can find silence with my thoughts and don’t feel any pressure to act for anybody or involve myself in a conversation that doesn’t interest me.</p> </blockquote> <h2>Get out of your comfort zone</h2> <p>Being able to do your own thing, without needing to consider others can be relaxing and can also give you the opportunity to do something you’ve never done before, free of judgement. You might want to go to some sort of class, shop or have a complete chill-out day.</p> <p>Findings from our research indicate that time spent doing things alone can relieve some of the pressures that companions can bring. Alone time gives you the space to experience things in your own time and take in your surroundings without distraction. In doing this, you may find yourself in new situations, away from your comfort zone – an energising and enthralling experience.</p> <h2>Embrace solo traveller culture</h2> <p>Solo travellers have their <a href="https://www.sciencedirect.com/science/article/pii/S0278431921002516">own way of doing things</a>, they have a shared behaviour and process and often become a collective in themselves. They acknowledge the process of travelling alone and respect others doing the same, and may even seek out spaces to be alone, together. Solo travellers can engage in a shared experience and dialogue while maintaining their own individualism – helping each other when needed, but also leave one another alone.</p> <blockquote> <p>We search for places where we feel we fit … We are happy to smile at one another. We don’t need to chat to engage. We are happy on our own with a coffee. I am amongst my tribe.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/184000/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> </blockquote> <p><a href="https://theconversation.com/profiles/claire-mccamley-446927"><em>Claire McCamley</em></a><em>, Senior Lecturer in marketing, <a href="https://theconversation.com/institutions/university-of-huddersfield-1226">University of Huddersfield</a></em></p> <p><em>Image credits: Getty Images</em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/why-you-should-travel-solo-this-summer-184000">original article</a>.</em></p>

Travel Tips

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Better Homes and Gardens star's dream rural property up for grabs

<p><em>Better Homes and Gardens </em>star Charlie Albone and his wife interior designer Juliet Love, have listed their dream Ourimbah home. </p> <p>The 2.07ha property located on the Central Coast has been listed by McGrath Gosford agents Peter Morris and Nate Waters with a $3m to $3.2m price guidance.</p> <p>The four-bedroom, three-bathroom home sits deep behind a gated entry, which ensures privacy and is surrounded by plenty of greenery with its garden alcoves, a stunning wisteria-covered arbour, fruit trees, and a few garden beds for vegetables. </p> <p>There is also a feature dry-stone wall fire pit built by Scottish stonemason Callum Grey, that's perfect for winter and colder nights.</p> <p>The English cottage-style home  comes with a separate self-contained unit that includes a bedroom and kitchenette. </p> <p>The home is every animal lovers' dream with five paddocks that come with animal shelters, plumbed water troughs and a three-stall stable. </p> <p>For those hot summer days, whoever the new owners are can dip into the saltwater pool located on the property. </p> <p>The property is equipped with 100,000-litre tanks and has town water. </p> <p>Albone and his family bought the property in 2012 for $840,000 which means that if it was sold at the price guide then it's almost four times the original price they bought it at. </p> <p>The top acreage sale at Ourimbah currently sits at $3,725,000 for a 13.93ha Dog Trap Rd six-bedroom house, which sold in 2021.</p> <p><em>Images: news.com.au</em></p>

Real Estate

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Yes, it’s getting more humid in summer. Here’s why

<p><em><a href="https://theconversation.com/profiles/steven-sherwood-272">Steven Sherwood</a>, <a href="https://theconversation.com/institutions/unsw-sydney-1414">UNSW Sydney</a></em></p> <p>Has Sydney felt more like Cairns lately? You’re not imagining it – millions of Australians up and down the east coast have sweltered through exceptionally high humidity in recent weeks.</p> <p>It’s due to normal weather patterns combined with a boost from global warming. Right now, the temperature of the sea surface is <a href="http://www.bom.gov.au/products/IDYOC052.Aus.SSTAnomaly.shtml">1–3°C above normal</a> for this time of year up and down the east coast. It’s particularly hot around the Queensland-New South Wales border and Tasmania’s east coast.</p> <p>When we have high ocean temperatures, we get more water evaporating. This is taken up by the air, which can hold more moisture when the air is hotter. This moist air is then carried to us by winds, and the sweating begins.</p> <h2>Where does humidity come from?</h2> <p>Humidity is just gaseous water held in the air after evaporating from liquid water or ice. It is called a vapour because it condenses into rain — the more humid, the more likely rain is.</p> <p>Higher humidity makes us feel hotter in warm weather, and slows the drying of laundry on a clothesline or of plants in the garden.</p> <p>How do we measure it? Two common ways are the “dew point” and “relative humidity”.</p> <p>At any given air temperature, there’s a limit to how much vapour the air will retain. Any vapour above this limit will just condense out. But the limit roughly doubles with every 10°C of warming; the dew point is the temperature where the vapour would hit the limit. The less vapour there is in the air, the colder the dew point.</p> <p>Relative humidity is the ratio of how much vapour the air has compared to the maximum it would retain.</p> <p>If you’re in Tasmania and see that relative humidity is at 100%, you might be confused. But this measure essentially tracks how “full” the air is. At 100% relative humidity, the dew point matches the actual temperature and no more vapour can be added. If the dew point is 10°C below the actual temperature, relative humidity is about 50%.</p> <p>How do we measure it? The dew point can be measured directly using a chilled mirror and a laser to detect condensation. More often it’s calculated from measurements of relative humidity and temperature.</p> <p>Relative humidity determines whether material exposed to the air will moisten or dry out. That’s why relative-humidity sensors use cheap water-absorbing materials (early ones used a strand of human hair!).</p> <h2>What does a changing climate mean for humidity?</h2> <p>The world’s higher ocean temperatures are unambiguously attributable to global warming, largely from the greenhouse gases we have added by burning fossil fuels. To date, more than 90% of all the extra heat thereby trapped has gone into the oceans.</p> <p>The amount of water vapour over the oceans has increased by roughly 5% since the industrial era began, in lockstep with global warming.</p> <p>Global warming will continue until we stop it. That means the atmosphere will keep getting more humid.</p> <p>If the world manages to keep global warming below 2°C, we should avoid the worst health outcomes from more humidity. But even then, we would expect up to another 5% increase in peak water vapour.</p> <p>Right now, we are seeing higher-than-normal temperatures in most of our surrounding oceans, with only a few exceptions. The areas hit hardest by rising humidity are mostly those that are already humid, like Queensland and the Northern Territory.</p> <p>Although peak dew points are rising, you may be confused to hear average relative humidity is actually <a href="https://www.pnas.org/doi/full/10.1073/pnas.1722312115">falling over land</a>. That’s because the land is warming so fast the average dew points aren’t quite keeping up with temperature, lowering the ratio.</p> <p>That means, alas, that Australia faces a double whammy: increasing water stress and bushfire risk as well as sweatier summers.</p> <h2>Humidity can be very dangerous</h2> <p>Our natural cooling system in hot weather is evaporation of sweat. Sweat forms on your skin, and the air evaporates it, taking the heat with it.</p> <p>But this only works to a point. When the dew point is higher, our self-cooling methods get less and less effective. How important this is depends on how hot you feel. On a moderate but muggy day, you might feel fine until you need to climb four flights of stairs and end up sweaty and exhausted. On a hotter but less muggy day you’d feel the heat at the outset, but would more easily handle the stairs.</p> <p>The Bureau of Meteorology uses something called “<a href="https://media.bom.gov.au/social/blog/1153/apparent-feels-like-temperature/">apparent temperature</a>” to capture the combined effect of temperature and humidity, although this assumes you’re not exerting yourself.</p> <p>How you feel with more exertion can be captured by other measures, such as the “wet bulb globe temperature” now being used at sporting events such as the Australian Open.</p> <p>The Bureau has recently begun providing <a href="http://www.bom.gov.au/places/nsw/sydney/forecast/detailed/">humidity and apparent temperature forecasts</a> as a beta product, which is great for activity planning.</p> <p>This type of information will become more important as the heat builds. As humidity increases during peak humid heat episodes, it makes heat stress worse and moves us toward our body’s physical limits.</p> <p><a href="https://www.pnas.org/doi/10.1073/pnas.2316003120">Recent research</a> has shown the combination of humidity and heat could make parts of the planet unlivable if Paris Agreement targets are not met, beginning in India and spreading elsewhere in the tropics – including the Top End of Australia.</p> <p>We need to prepare now for increasing heat, while doing everything we can to stop the routine burning of fossil fuels as soon as possible to maintain a margin of safety for humanity.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/221748/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><a href="https://theconversation.com/profiles/steven-sherwood-272"><em>Steven Sherwood</em></a><em>, Professor of Atmospheric Sciences, Climate Change Research Centre, <a href="https://theconversation.com/institutions/unsw-sydney-1414">UNSW Sydney</a></em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/yes-its-getting-more-humid-in-summer-heres-why-221748">original article</a>.</em></p>

Domestic Travel

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“Don’t be alarmed”: Better Homes and Gardens star makes shock announcement

<p dir="ltr"><em>Better Homes and Gardens</em> star Karen Martini has announced she will be “stepping back” from her role on the program. </p> <p dir="ltr">After almost two decades on the show, the 52-year-old admitted she has “so much on my plate” this year as she balances a range of different projects. </p> <p dir="ltr">The chef and restaurateur will be taking a break from the show to focus on work, while also making more time for her teenage daughters, Stella, 17, and Amber, 15.</p> <p dir="ltr">She told <em><a href="https://7news.com.au/entertainment/tv/better-homes-and-garden-star-karen-martini-makes-shock-announcement-stepping-back-c-13310981">7News</a></em>, “With my two new restaurants— Johnny’s Green Room already open and Saint George set to launch soon — as well as so many other projects on the go, 2024 is shaping up to be my busiest year ever.”</p> <p dir="ltr">“My daughters are in their last teenage years too — it’s quite daunting as Stella is in year 12 and also on her Ls.”</p> <p dir="ltr">“With so much on my plate, I’ve made the decision to step back from <em>Better Homes and Gardens</em> (BHAG) this year while I focus on some of my other exciting projects.”</p> <p dir="ltr">“So don’t be alarmed if I’m not in your living room every Friday night.”</p> <p dir="ltr">Karen will continue to make the occasional guest appearance on the show, but will not feature in every episode. </p> <p dir="ltr">After the news of Karen’s departure was announced on the <em>Better Homes &amp; Gardens</em> Instagram account, longtime viewers shared their messages of support to the chef in her next ventures. </p> <p dir="ltr">One person wrote, “Been watching since you joined in 2007 and I’ve loved watching you in the kitchen. All the best.”</p> <p dir="ltr">The 52-year-old also shared her excitement over the newest addition to the <em>Better Homes</em> line-up: chef and <em>MKR</em> judge Colin Fassnidge.</p> <p dir="ltr">“I’m so excited that my mate Colin Fassnidge is entering the <em>Better Homes</em> kitchen,” she went on.</p> <p dir="ltr">“I think his cheeky flavour is sure to spice up the show and I can’t wait to see him on air when we are back on Friday, February 2.”</p> <p dir="ltr" style="line-height: 1.38; margin-top: 0pt; margin-bottom: 14pt;"><em>Image credits: Instagram</em><span id="docs-internal-guid-f58c99fe-7fff-4b7e-1eb4-bc9024fbdc3d"></span></p>

TV

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Jimmy Barnes' granddaughter's touching tribute at Red Hot Summer

<p>With Jimmy Barnes currently recovering from <a href="https://www.oversixty.com.au/health/caring/the-dose-of-magic-helping-jimmy-barnes-recover-after-surgery" target="_blank" rel="noopener">open heart surgery</a>, there was no way he could perform at the Red Hot Summer Tour, but his family and friends have come together to put on a show in honour of the star. </p> <p>The<em> Barnes All-Stars</em>, formed by none other than Jimmy's own daughter Mahalia, includes stars like Jon Stevens, Chris Cheney, and his legendary <em>Cold Chisel</em> bandmate, Ian Moss.</p> <p>The band have been headlining for the first three shows of the tour, and performed classic songs by <em>Cold Chisel</em> and Jimmy Barnes, which were compiled by the rock star himself.</p> <p>While the band put on a stellar show, Jimmy's granddaughter, Ruby Rogers' performance of the the Chisel classic <em>Flame Trees, </em>stole the hearts of fans. </p> <p>"In case you didn’t get to see this fantastic performance, this is granddaughter Ruby filling in for me on the weekend," Jimmy tweeted, gushing over her performance. </p> <p>"I love her so much.  Thanks everyone. Full video on my FB page," he added. </p> <blockquote class="twitter-tweet"> <p dir="ltr" lang="en">In case you didn’t get to see this fantastic performance, this is granddaughter Ruby filling in for me on the weekend. I love her so much. Thanks everyone.</p> <p>Full video on my FB page <a href="https://t.co/DgOApqBwnZ">pic.twitter.com/DgOApqBwnZ</a></p> <p>— Jimmy Barnes (@JimmyBarnes) <a href="https://twitter.com/JimmyBarnes/status/1746809216399265998?ref_src=twsrc%5Etfw">January 15, 2024</a></p></blockquote> <p> </p> <p>The clip shows Ruby singing an acoustic version of the song, and the crowd of over 8000 people can be heard singing along with her. </p> <p>Fans have taken to the comments to praise Ruby's talent. </p> <p>"Doing you proud Jimmy. What a beautiful voice Ruby has. Such a talented family you and Jane have," one wrote. </p> <p>"Absolutely stunning beautiful Ruby. You are so privileged Jimmy to have such a beautiful granddaughter," another added. </p> <p>"Wow how proud you guys must be. That was a wonderful tribute to you. Such a beautiful, talented girl ❤️" commented a third. </p> <p><em>Images: Facebook/ Instagram</em></p> <p> </p>

Family & Pets

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Better Homes and Gardens unveils new celebrity chef

<p>Last November, <em>Better Homes and Gardens </em><a href="https://www.oversixty.com.au/entertainment/tv/better-homes-and-gardens-star-announces-exit-after-20-years" target="_blank" rel="noopener">farewelled</a> chef "Fast" Ed Halmagyi, after 20 years on the show. </p> <p>Fans have since been left wondering who will replace him, but the wait is now over. </p> <p>Celebrated chef and <em>My Kitchen Rules</em> judge Colin Fassnidge is set to join the cast  from Friday, 2 February 2024. </p> <p>The Irish TV personality will share his much-loved family recipes as the show celebrates it's 30th anniversary.</p> <p>“Working on Better Homes and Gardens really feels like coming home,” he told<em> 7Life</em>. </p> <p>“I’ve been friends with Johanna Griggs ever since I started at Channel 7, and the rest of the cast and I get on like a house on fire.</p> <p>“I can’t wait to get out on the road and travel around this beautiful country, cooking with some of the best and freshest produce in the world.”</p> <p>He also added that he is a bit intimidated as he has big shoes to fill in after Fast Ed's departure. </p> <p>“It’s a little bit scary, but it’s a good challenge and a lot of fun as well,” he said.</p> <p>Fassnidge also shared what he is planning to bring to the table in the coming year. </p> <p>“This show means a lot of things to a lot of people. I’m going to bring a bit of Irish spice to the table!</p> <p>“I want to do fun, affordable cooking — I’m a chef, but I’ve also got kids as well, so I know how hard it is to put food on the table in this day and age with the cost of living and interest rate rises.</p> <p>“I want to show people how they can use cheaper cuts of meat, how to save time, how to feed the family on a budget, but still make delicious meals.”</p> <p><em>Better Homes and Gardens </em>executive producer Russell Palmer said he was excited to welcome the <em>MKR</em> star to the team, saying it marked the beginning of a new chapter for the show. </p> <p>“He’s a talented and well-respected chef and brings his own charm and innovation, which is sure to inspire our audience,”  he said. </p> <p><em>Images: 7News</em></p>

Food & Wine

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Our dogs can terrify (and even kill) wildlife. Here’s how to be a responsible owner this summer

<p><em><a href="https://theconversation.com/profiles/melissa-starling-461103">Melissa Starling</a>, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a></em></p> <p>In Australia, dog ownership often goes hand-in-hand with a love for the great outdoors. Whether it’s walking on the beach, going camping, or having a barbecue in the park, we tend to keep our canine companions close as we soak up the sun.</p> <p>But many of us forget a key fact about our dogs: they are predators. Even the fluffy little 5kg ball that spends most of its time in your lap derives from an apex predator – and its predatory instincts can kick in at any time.</p> <p>And while many of our dogs don’t have the same hunting skills as their distant ancestors (who had to hunt for a living), wildlife doesn’t know that.</p> <p>The impacts of domestic dogs on wildlife aren’t well studied, and likely vary depending on the environment. Nonetheless, there’s good evidence domestic dogs, when left unobserved, can have detrimental effects in the places they visit.</p> <p>With that in mind, here are some things to consider next time you take your pup out for a bushwalk.</p> <h2>How dogs impact ecosystems</h2> <p>There are <a href="https://www.sciencedirect.com/science/article/abs/pii/S0006320717305967">five main ways</a> domestic dogs can negatively impact the natural environments they visit. These are:</p> <ol> <li>direct physical harm through predatory behaviour</li> <li>disturbance through chasing and harassment</li> <li>increased exposure to diseases</li> <li>interbreeding, which can alter the gene pool of wild canid populations</li> <li>increased competition for resources.</li> </ol> <p>The good news is the last three points aren’t particularly relevant in Australia. For one thing, there’s little overlap between diseases common in domestic dogs and Australian wildlife. There’s also little resource overlap, except perhaps in some areas where feral or semi-feral dogs live alongside dingoes.</p> <p>And regarding potential interbreeding, while it was once thought this could threaten the dingo gene pool, <a href="https://onlinelibrary.wiley.com/doi/full/10.1111/mec.16998">recent research</a> suggests it’s not nearly as common as we thought.</p> <p>As such, the main harms Aussie dog owners should focus on are physical harms through predatory behaviour and disturbance to ecosystems.</p> <h2>Dogs can kill</h2> <p>We know dogs are capable of injuring and killing wildlife, but it’s difficult to determine how common this is, because many events go unreported. While smaller animals such as lizards, gliders and possums are at higher risk, larger species such as koalas can also fall prey to dogs.</p> <p><a href="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0206958">One study</a> that looked at wildlife coming into care at Queensland rehabilitation centres reported dog attacks as the cause in about 9% of cases. These cases often resulted in severe injury or death.</p> <p>Dog owners should be especially wary of small, localised populations of vulnerable species. A <a href="https://ri.conicet.gov.ar/bitstream/handle/11336/202640/CONICET_Digital_Nro.29048152-7a5c-4ea2-8068-e73d42cba01d_B.pdf?sequence=2&amp;isAllowed=y">study</a> in Argentina’s Patagonia region details several cases of dogs decimating local penguin populations after gaining access to protected island areas during low tide.</p> <p>Not to mention, dog attacks on wildlife can bring risk to dogs as well. Kangaroos can defend themselves with <a href="https://www.abc.net.au/news/2023-10-16/mildura-man-fights-kangaroo-to-protect-dog/102983926">their powerful limbs</a>, monitor lizards are equipped with sharp claws and teeth, and many snake species <a href="https://www.brisbanetimes.com.au/national/queensland/dogs-twice-as-likely-to-die-from-snake-bite-as-cats-research-finds-20200519-p54ufd.html">are highly venomous</a>.</p> <h2>The impact of harassment</h2> <p>You might think it’s harmless for your dog to chase wildlife if it never manages to catch the animals it chases, but that isn’t true. Wild animals optimise their behaviours to meet their needs for foraging, breeding and resting, and being chased by a dog can disrupt this.</p> <p>For example, certain threatened bird species will nest on the beach and find foraging opportunities based on the tides. One dog forcing one bird to abandon this important activity may have a small impact. But if it happens repeatedly throughout the day, it can become a <a href="https://wilderness-society.org/wp-content/uploads/2019/04/Dogs-as-agents-of-disturbance-Michael-A.-Weston-and-Theodore-Stankowich.pdf">much bigger problem</a>. It may even drive animals out of the area.</p> <p><a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2391219/">Research</a> conducted in Sydney has shown the mere presence of a leashed dog is enough to temporarily, yet dramatically, reduce the number of bird species detected.</p> <h2>Keep an eye on your furry pal</h2> <p>Responsible dog ownership involves making sure our dogs have a minimal impact on others, including wildlife. How can we achieve this when our dogs are simply engaging in behaviours that come naturally to them, and may even be rewarding for them?</p> <p>Training your dog to have general obedience – especially to come when called – is worth sinking considerable time and effort into. This can save both your dog and any wildlife they may be after. For instance, calling a dog away from a snake is one of the most effective ways of managing snake bite risk.</p> <p>One <a href="https://www.researchgate.net/publication/333344634_Applying_Social_Marketing_to_Koala_Conservation_The_Leave_It_Pilot_Program">pilot study</a> in Victoria found positive outcomes from a program that helped owners train their dogs to be more obedient around wildlife.</p> <p>That said, recall training is an art form, and recalling a dog that likes to run off and chase animals can be a huge challenge.</p> <p>Another solution is to rely on leashes when passing sensitive areas, or where there’s a risk of wildlife harassment. In Australia, many beaches that allow dogs have signs with information about vulnerable birds in the area and how to protect them from your dog.</p> <p>This could mean keeping your dog off rock platforms, leashing them when you see birds foraging on the beach, or keeping them out of fenced areas. Some areas are simply too vulnerable for dogs to run amok, so always look for signs and read them carefully.</p> <p>If you’re hiking, use a long line (a leash that’s more than five metres long) and look for signs of your dog detecting something of interest. Often their ears will come up high and forward, and they will freeze and stare intently.</p> <p>At this point, it doesn’t matter what they’re excited about: take the opportunity to leash them or shorten their leash, and get their attention before they can take off. Investing in a long leash will allow your dog more freedom without putting wildlife at risk.</p> <p>If your dog does injure an animal, you should quickly contact a wildlife rescue organisation or take the animal to a veterinary practice or sanctuary. For small animals, even minor injuries from a dog will usually require veterinary attention.</p> <p>It’s our responsibility to be respectful visitors when we’re out in nature, and to make sure our dogs are too. <!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/214722/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><a href="https://theconversation.com/profiles/melissa-starling-461103"><em>Melissa Starling</em></a><em>, Postdoctoral Researcher in Veterinary Science, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a></em></p> <p><em>Image credits: Getty Images</em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/our-dogs-can-terrify-and-even-kill-wildlife-heres-how-to-be-a-responsible-owner-this-summer-214722">original article</a>.</em></p>

Family & Pets

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What does El Niño do to the weather in your state?

<p><em><a href="https://theconversation.com/profiles/kimberley-reid-767059">Kimberley Reid</a>, <a href="https://theconversation.com/institutions/monash-university-1065">Monash University</a></em></p> <p>You’ve probably heard El Niño brings hot and dry weather to the eastern states, but what about the rest of Australia? Are we all in for a scorcher this summer?</p> <p>El Niño is what scientists call a <a href="https://www.climatechangeinaustralia.gov.au/en/overview/climate-system/australian-climate-influences/">climate driver</a>. But it’s just one of many.</p> <p>These climate drivers control year-to-year variations in the weather. Some years are hotter and drier, while others are cooler and wetter.</p> <p>Australia is particularly prone to weather whiplash because our continent is buffeted by climate drivers to our north, south, east and west. The dominant driver in your state may be one of the lesser-known influences.</p> <figure><iframe src="https://www.youtube.com/embed/iVhi1wq2sTY?wmode=transparent&amp;start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe><figcaption><span class="caption">Understanding Climate Drivers (Bureau of Meteorology)</span></figcaption></figure> <h2>East: El Niño Southern Oscillation</h2> <p>The El Niño Southern Oscillation (ENSO) is the resident climate driver in the Pacific Ocean and the driver with the biggest influence over Australian weather. Differences in sea surface temperatures and winds across the Pacific determine whether we swing towards El Niño (the boy) or La Niña (the girl).</p> <p><a href="http://www.bom.gov.au/climate/about/?bookmark=enso">During the El Niño phase</a>, sea surface temperatures near South America are warmer than normal and they are cooler than normal off the coast of eastern Australia. Additionally, trade winds that blow from east to west across the Pacific weaken.</p> <p>El Niño brings hotter daytime temperatures, but often <a href="http://www.bom.gov.au/climate/enso/#tabs=Pacific-Ocean&amp;pacific=History">cooler nights</a>. That’s because reduced cloud cover allows more heat to escape into space overnight. So the same process that increases the chances of heatwaves can also raise the <a href="https://www.agric.wa.gov.au/climate-weather/historical-frost-and-heat-maps-south-west-land-division">risk of frost</a> in Western Australia, New South Wales, the Australian Capital Territory and Victoria.</p> <p>Australia as a whole is typically drier during an El Niño event. In the tropical regions, El Niño can delay the <a href="http://www.bom.gov.au/climate/updates/articles/a008-el-nino-and-australia.shtml">onset of the monsoon and reduce the likelihood of tropical cyclones</a>. In the southern states, the hot and dry conditions increase the chance of intense bushfires.</p> <p>La Niña is the opposite phase. Waters off eastern Australia are warmer than usual, increasing the <a href="http://www.bom.gov.au/climate/enso/#tabs=Pacific-Ocean&amp;pacific=History&amp;enso-impacts=La-Ni%C3%B1a-impacts">chance of tropical cyclones</a> and an earlier start to the monsoon for WA, the Northern Territory and Queensland.</p> <p>So what does El Niño do to the weather in your state? Hover over your state in the interactive map to find out.</p> <p><iframe id="tc-infographic-1008" class="tc-infographic" style="border: none;" src="https://cdn.theconversation.com/infographics/1008/7f37ae91389db072906b320ffd54d0fefd840c0d/site/index.html" width="100%" height="400px" frameborder="0"></iframe></p> <h2>West: Indian Ocean Dipole</h2> <p>The <a href="http://www.bom.gov.au/climate/about/?bookmark=iod">Indian Ocean Dipole</a> is like ENSO’s Indian Ocean cousin. A positive Indian Ocean Dipole is declared when ocean temperatures near Africa are warmer than normal and ocean temperatures off the coast of Sumatra are cooler than usual.</p> <p>A positive dipole tends to bring warmer and drier conditions, particularly to western and central Australia. A negative Indian Ocean Dipole is the reverse and is associated with wetter than normal weather and an increase in <a href="https://pursuit.unimelb.edu.au/articles/why-more-clouds-can-mean-less-rain-in-australia">northwest cloudbands</a>.</p> <h2>North: Madden-Julian Oscillation</h2> <p>The <a href="http://www.bom.gov.au/climate/about/?bookmark=mjo">Madden-Julian Oscillation</a> is a pulse of storms that start in the Indian Ocean, travel over Northern Australia and Indonesia and die in the Pacific Ocean. Ahead of the pulse, the air sinks, causing sunny and dry weather. Under the pulse is high storm activity and typically heavy rainfall.</p> <p>We describe the Madden-Julian Oscillation based on whether the pulse of storms is <a href="http://www.bom.gov.au/climate/mjo/">active or inactive</a> and where the storm activity is located on its path between the Indian and Pacific Oceans. As well as causing rainfall, the Madden-Julian Oscillation can control the timing of the monsoon onset and <a href="http://www.bom.gov.au/climate/about/?bookmark=tc">tropical cyclone formation</a>.</p> <h2>South: Southern Annular Mode</h2> <p>The <a href="http://www.bom.gov.au/climate/about/?bookmark=sam">Southern Annular Mode</a> controls the north and south position of the westerly winds that whizz around the globe in the Southern Ocean. When the winds are further north than usual, we call this the negative phase. But when the westerly wind move towards Antarctica, we call this the positive phase.</p> <p>The phase of the Southern Annular Mode <a href="https://rmets.onlinelibrary.wiley.com/doi/abs/10.1002/joc.1370">affects how many weather systems</a>, like cold fronts, make landfall over southern Australia. A positive mode may also draw tropical moist air south, which happened in 2022 during the extensive flooding over eastern Australia.</p> <h2>Climate drivers control the odds, but not the result</h2> <p>These four key climate drivers affect the weather on average (over months and seasons), but they do not dictate the exact day-to-day weather we experience. As the Gippsland region of Victoria <a href="https://www.theguardian.com/australia-news/2023/oct/05/victoria-floods-flooding-warnings-gippsland-region-flood-and-fires-evacuation">saw in October</a>, heavy rainfall can still occur during an El Niño.</p> <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/561494/original/file-20231124-16-ip8fja.png?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=1000&amp;fit=clip"><img src="https://images.theconversation.com/files/561494/original/file-20231124-16-ip8fja.png?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/561494/original/file-20231124-16-ip8fja.png?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=600&amp;h=407&amp;fit=crop&amp;dpr=1 600w, https://images.theconversation.com/files/561494/original/file-20231124-16-ip8fja.png?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=600&amp;h=407&amp;fit=crop&amp;dpr=2 1200w, https://images.theconversation.com/files/561494/original/file-20231124-16-ip8fja.png?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=600&amp;h=407&amp;fit=crop&amp;dpr=3 1800w, https://images.theconversation.com/files/561494/original/file-20231124-16-ip8fja.png?ixlib=rb-1.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;h=512&amp;fit=crop&amp;dpr=1 754w, https://images.theconversation.com/files/561494/original/file-20231124-16-ip8fja.png?ixlib=rb-1.1.0&amp;q=30&amp;auto=format&amp;w=754&amp;h=512&amp;fit=crop&amp;dpr=2 1508w, https://images.theconversation.com/files/561494/original/file-20231124-16-ip8fja.png?ixlib=rb-1.1.0&amp;q=15&amp;auto=format&amp;w=754&amp;h=512&amp;fit=crop&amp;dpr=3 2262w" alt="Map of Australia showing the difference from normal rainfall during October 2023, with a large wet patch around Gippsland, Victoria." /></a><figcaption><span class="caption">Difference from normal rainfall during October 2023, showing defined wet area around Gippsland, Victoria surrounded by drier conditions.</span> <span class="attribution"><span class="source">The Bureau of Meteorology</span></span></figcaption></figure> <p>Climate drivers are like a football coach. They can select the best players and develop ingenious strategies, but that doesn’t guarantee a win every time.</p> <p>Players can get injured on the field or simply have a bad game. These uncontrollable factors are challenging to predict and may change the result from what we would expect. Scientists call this stochasticity. The climate drivers are the football coach, but the day-to-day weather systems are the players.</p> <p>The Bureau of Meteorology <a href="http://www.bom.gov.au/climate/enso/">releases an update</a> on all of these drivers every two weeks. The update explains which drivers are currently active and the forecast for the next few weeks.</p> <p>So, if you are wondering why the weather is cooler during summer, or it’s raining in the middle of the dry season, perhaps take a look at which driver is steering Australia’s weather at the moment.<!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/218257/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <p><em><a href="https://theconversation.com/profiles/kimberley-reid-767059">Kimberley Reid</a>, Postdoctoral Research Fellow in Atmospheric Sciences, <a href="https://theconversation.com/institutions/monash-university-1065">Monash University</a></em></p> <p><em>Image credits: Shutterstock</em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/what-does-el-nino-do-to-the-weather-in-your-state-218257">original article</a>.</em></p>

Domestic Travel

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It’s extremely hot and I’m feeling weak and dizzy. Could I have heat stroke?

<p><em><a href="https://theconversation.com/profiles/lily-hospers-1060107">Lily Hospers</a>, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a>; <a href="https://theconversation.com/profiles/james-smallcombe-1412548">James Smallcombe</a>, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a>, and <a href="https://theconversation.com/profiles/ollie-jay-114164">Ollie Jay</a>, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a></em></p> <p>Australia is braced for a hot, dry summer. El Nino is back, and this year it will occur alongside an <a href="https://www.abc.net.au/news/2023-08-22/positive-indian-ocean-dipole-to-coincide-with-el-nino/102756378">Indian Ocean dipole</a>, a climate pattern which will further amplify this hot and dry effect.</p> <p>Hot weather can place great stress on our bodies. When the environmental conditions exceed the limit at which we can adequately cope, we can suffer from heat-related illnesses.</p> <p>Heat illnesses can vary, from relatively mild heat exhaustion to the potentially life-threatening condition of heat stroke.</p> <h2>What are the signs and symptoms?</h2> <p>If you’re suffering from heat exhaustion, you may feel weakness, nausea, headaches or dizziness.</p> <p>Mild <a href="https://www.health.nsw.gov.au/environment/beattheheat/Pages/heat-related-illness.aspx">symptoms of heat exhaustion</a> can often be treated at home by reducing your levels of physical activity, finding shade, removing excess clothing, hydrating with water and perhaps even taking a cool shower.</p> <p>If left unchecked, heat exhaustion can progress to the far more serious condition of heat stroke, where your core temperature climbs upwards of 40°C. <a href="https://www.health.nsw.gov.au/environment/beattheheat/Pages/heat-related-illness.aspx">Symptoms</a> can develop rapidly and may include confusion, disorientation, agitation, convulsions, or it could even result in a coma.</p> <p>Heat stroke is a medical emergency and requires urgent treatment. Call an ambulance and start rapid, aggressive cooling by immersing the person in cold water (such as a cold bath). If this isn’t possible, apply ice packs to their neck, armpits and groin and cover the skin with lots of cool water.</p> <p>When it comes to cooling someone with suspected heat stroke, the quicker the better: cool first, transport second.</p> <h2>Why do we overheat?</h2> <p>Environmental conditions play an important role in determining our heat stress risk. If the air temperature, humidity and levels of sun exposure are high, we are much more likely to dangerously overheat.</p> <p>When the body gets hot, the heart pumps more warm blood to our skin to help lose heat. As air temperature rises, this way of shedding heat becomes ineffective. When air temperature is higher than the temperature of the skin (normally around 35°C), we start gaining heat from our surroundings.</p> <p>Sweating is by far our most effective physiological means of keeping cool. However, it is the <em>evaporation</em> of sweat from our skin that provides cooling relief.</p> <p>When the air is humid, it already contains a lot of moisture, and this reduces how efficiently sweat evaporates.</p> <p>Our physical activity levels and clothing also impact heat stress risk. When we move, our bodies generate metabolic heat as a by-product. The more intense physical activity is, the more heat we must lose to avoid dangerous rises in core temperature.</p> <p>Finally, clothing can act as an insulator and barrier for the evaporation of sweat, making it even more difficult for us to keep cool.</p> <h2>Who is most vulnerable in the heat?</h2> <p>Some people <a href="https://www.health.nsw.gov.au/environment/beattheheat/Pages/people-most-at-risk.aspx">are at greater risk</a> of developing heat illness than others. This can result from physiological limitations, such as a decreased capacity to sweat, or a reduced capacity to adapt our behaviour. When these two risk factors coincide, it’s a perfect storm of vulnerability.</p> <p>Take, for example, an elderly outdoor agricultural worker. Being aged over 60, their physiological capacity to sweat is reduced. The worker may also be wearing heavy safety clothing, which may further limit heat loss from the body. If they don’t slow down, seek shelter and adequately hydrate, they become even more vulnerable.</p> <p>When a person dies of heat stroke – which is relatively easy to diagnose – heat will be listed as a cause of death on a death certificate. Between 2001 and 2018 in Australia, 473 heat-related deaths were <a href="https://www.sciencedirect.com/science/article/pii/S2212420921006324">officially reported</a>.</p> <p>However, the true association between heat and death is thought to be far greater, with an <a href="https://www.thelancet.com/journals/lanplh/article/PIIS2542-5196(20)30100-5/fulltext">estimated 36,000 deaths</a> in Australia between 2006 and 2017.</p> <p>This is because most people who die during extreme heat events do not die from heat stroke. Instead, they they die of <a href="https://www.nejm.org/doi/full/10.1056/nejm199607113350203">other medical complications</a> such as cardiovascular or renal collapse, as additional strain is placed on essential organs such as the heart and kidneys.</p> <p>People with underlying health conditions are more likely to succumb to heat-associated complications before they develop critical core temperature (over 40°C) and heat stroke.</p> <p>In such cases, while the additional physiological strain imposed by the heat probably “caused” the death, the official “cause of death” is often listed as something else, such as a heart attack. This can make understanding the true health burden of extreme heat more difficult.</p> <h2>How to stay safe in the heat</h2> <p>Thankfully, there are effective, low-cost <a href="https://twitter.com/TheLancet/status/1677702906789740545">ways</a> of staying safe in the heat. These include: <!-- Below is The Conversation's page counter tag. Please DO NOT REMOVE. --><img style="border: none !important; box-shadow: none !important; margin: 0 !important; max-height: 1px !important; max-width: 1px !important; min-height: 1px !important; min-width: 1px !important; opacity: 0 !important; outline: none !important; padding: 0 !important;" src="https://counter.theconversation.com/content/215084/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /><!-- End of code. If you don't see any code above, please get new code from the Advanced tab after you click the republish button. The page counter does not collect any personal data. More info: https://theconversation.com/republishing-guidelines --></p> <ul> <li>staying adequately hydrated</li> <li>getting out of the heat to a cooler area indoors or shaded area outdoors</li> <li>loosening or removing clothing</li> <li>cooling down any way you can: <ul> <li>using an electric fan (which can be used at 37°C and below, irrespective of age and humidity)</li> <li>using a cold-water spray</li> <li>applying a cool, damp sponge or cloth</li> <li>wetting clothes and skin</li> <li>having a cool shower or bath</li> <li>applying ice packs or crushed ice in a damp towel on the neck, groin and armpits.</li> </ul> </li> </ul> <p><a href="https://theconversation.com/profiles/lily-hospers-1060107"><em>Lily Hospers</em></a><em>, PhD Candidate, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a>; <a href="https://theconversation.com/profiles/james-smallcombe-1412548">James Smallcombe</a>, Post-doctoral Research Associate, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a>, and <a href="https://theconversation.com/profiles/ollie-jay-114164">Ollie Jay</a>, Professor of Heat &amp; Health; Director of Heat &amp; Health Research Incubator; Director of Thermal Ergonomics Laboratory, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a></em></p> <p><em>Image credits: Getty Images</em></p> <p><em>This article is republished from <a href="https://theconversation.com">The Conversation</a> under a Creative Commons license. Read the <a href="https://theconversation.com/its-extremely-hot-and-im-feeling-weak-and-dizzy-could-i-have-heat-stroke-215084">original ar</a><a href="https://theconversation.com/its-extremely-hot-and-im-feeling-weak-and-dizzy-could-i-have-heat-stroke-215084">ticle</a>.</em></p>

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Better Homes and Gardens star announces exit after 20 years

<p>After 20 years of sharing his quick and easy recipes on <em>Better Homes and Gardens</em>, Ed Halmagyi - or as viewers know him, Fast Ed - is leaving the show</p> <p>Ed will step away from the show in two weeks to focus on a personal business venture, with his final appearance airing on Friday December 1. </p> <p>“I got closer and closer to marking 20 years of Better Homes and I thought about what I want to do in the next 10 years,” he told <em>7News</em>. </p> <p>“I’ve been incredibly lucky over the course of the last 20 years to be able to tell some really cool stories about some really amazing people.”</p> <p>“I have been honoured to get the chance to tell stories to people who love food every week and be part of this amazing show that is part of Australia’s fabric.</p> <p>“I will certainly miss being a part of Australia’s Friday nights and working alongside my Better Homes family.”</p> <p>Ed also said that agrees with his friends who have told him that his role on the show is the "best job in the world." </p> <p>“It’s pretty darned incredible,” he told the publication. </p> <p>“I’ve worked with the most incredible places, with the most incredible team.</p> <p>“I’ve had the best time, and will be forever grateful to Joh, my fellow presenters, the Better Homes team behind the scenes and to everyone who watches our show each and every night.”</p> <p>Prior to starring in the show, Ed was running a restaurant in Sydney, and was recruited after he impressed the producers with his upbeat personality when they filmed a Sydney Weekender there. </p> <p>“Twenty years ago, after what I considered an unremarkable Sydney Weekender appearance, I was asked to do a screen test,” he recalled. </p> <p>Ed never thought he would get a career in media, and it all worked out for him in the end. </p> <p>“To be honest, I never felt more ridiculous in my life than I did on that day, but I just kind of decided to be me, and…..what the hell.</p> <p>“That I’m still doing it 20 years later is equal parts fantastic and bizarre.”</p> <p>Although Ed's replacement on the show is yet to be announced, the one piece of advice that he has for them is this: “Be you and start out with the absolute most sincere respect for your audience.”</p> <p><em>Image: Seven</em></p>

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"So beautiful": Summer Warne overwhelmed by Coldplay's tribute to Shane

<p>Summer Warne has captured the emotional moment that Coldplay frontman Chris Martin paid tribute to her late father on stage. </p> <p>During their show in Perth on Sunday night, Martin bean singing an original acoustic song that honoured Shane Warne in a unique way. </p> <p>Shane's daughter Summer was in the audience for the performance, and was incredibly touched by the gesture. </p> <p>During the song, Chris Martin sang the lyrics, "Friends come, and friends go, there are just some people you're lucky to know. If I could, I'd do it all again, so thanks for everything Shane."</p> <blockquote class="instagram-media" style="background: #FFF; border: 0; border-radius: 3px; box-shadow: 0 0 1px 0 rgba(0,0,0,0.5),0 1px 10px 0 rgba(0,0,0,0.15); margin: 1px; max-width: 540px; min-width: 326px; padding: 0; width: calc(100% - 2px);" data-instgrm-permalink="https://www.instagram.com/reel/Cz1Ln4fRVQU/?utm_source=ig_embed&amp;utm_campaign=loading" data-instgrm-version="14"> <div style="padding: 16px;"> <div style="display: flex; flex-direction: row; align-items: center;"> <div style="background-color: #f4f4f4; border-radius: 50%; flex-grow: 0; height: 40px; margin-right: 14px; width: 40px;"> </div> <div style="display: flex; flex-direction: column; flex-grow: 1; justify-content: center;"> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 100px;"> </div> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; width: 60px;"> </div> </div> </div> <div style="padding: 19% 0;"> </div> <div style="display: block; height: 50px; margin: 0 auto 12px; width: 50px;"> </div> <div style="padding-top: 8px;"> <div style="color: #3897f0; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: 550; line-height: 18px;">View this post on Instagram</div> </div> <div style="padding: 12.5% 0;"> </div> <div style="display: flex; flex-direction: row; margin-bottom: 14px; align-items: center;"> <div> <div style="background-color: #f4f4f4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(0px) translateY(7px);"> </div> <div style="background-color: #f4f4f4; height: 12.5px; transform: rotate(-45deg) translateX(3px) translateY(1px); width: 12.5px; flex-grow: 0; margin-right: 14px; margin-left: 2px;"> </div> <div style="background-color: #f4f4f4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(9px) translateY(-18px);"> </div> </div> <div style="margin-left: 8px;"> <div style="background-color: #f4f4f4; border-radius: 50%; flex-grow: 0; height: 20px; width: 20px;"> </div> <div style="width: 0; height: 0; border-top: 2px solid transparent; border-left: 6px solid #f4f4f4; border-bottom: 2px solid transparent; transform: translateX(16px) translateY(-4px) rotate(30deg);"> </div> </div> <div style="margin-left: auto;"> <div style="width: 0px; border-top: 8px solid #F4F4F4; border-right: 8px solid transparent; transform: translateY(16px);"> </div> <div style="background-color: #f4f4f4; flex-grow: 0; height: 12px; width: 16px; transform: translateY(-4px);"> </div> <div style="width: 0; height: 0; border-top: 8px solid #F4F4F4; border-left: 8px solid transparent; transform: translateY(-4px) translateX(8px);"> </div> </div> </div> <div style="display: flex; flex-direction: column; flex-grow: 1; justify-content: center; margin-bottom: 24px;"> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 224px;"> </div> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; width: 144px;"> </div> </div> <p style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; line-height: 17px; margin-bottom: 0; margin-top: 8px; overflow: hidden; padding: 8px 0 7px; text-align: center; text-overflow: ellipsis; white-space: nowrap;"><a style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: normal; line-height: 17px; text-decoration: none;" href="https://www.instagram.com/reel/Cz1Ln4fRVQU/?utm_source=ig_embed&amp;utm_campaign=loading" target="_blank" rel="noopener">A post shared by Summer Warne 🍒 (@summerwarne)</a></p> </div> </blockquote> <p>He even joked at one point, singing "I needed sunglasses just to look at your teeth," and poked fun at the late cricketer's lack of rhythm. </p> <p>Summer posted a clip of the emotional moment to Instagram with the caption, "The most amazing song dedicated to Dad. Thank you Chris, so beautiful <a title="" href="https://www.instagram.com/coldplay/?hl=en" target="_blank" rel="nofollow noopener">@coldplay</a> Love you dad xx."</p> <p>This isn't the first time Martin has honoured the star in song, as Coldplay dedicated an acoustic cover of their hit song <em>Yellow</em> to the sporting legend at Shane's memorial. </p> <p>The performance was done via video, as Chris began saying, "I am sorry I cannot be there today."</p> <p>"We are on tour in Central America and there are a lot of background noises, but I feel like that may be OK with him. I think chaos and Shane were good friends."</p> <p><em>Image credits: Instagram</em></p>

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