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Readers response: How do you handle changes in energy levels as you age?

As we get older, our levels of energy, ability and agility can slowly start to decrease, making us change our day-to-day lifestyles. We asked our readers how they handle these changes, and the response was overwhelming. Here's what they said. Margo Courtney - Eat clean and healthy and your body will reward you with heaps of energy and vitality. I have a very big green smoothie most days as one of my 2 meals, along with 2 litres of water a day, and I don't even need much sleep. Ron Stubbs - Up at 8am, can’t be late for my walk in the sun, and feeling great. Don’t need afternoon snooze then. I’m 77. Kristeen Bon - I don’t handle them. I flop on the couch most afternoons for a quick five minute interior eye check! Sylvia Brice - I have an autoimmune disease so my levels of energy are way down. I do what l can in small bursts and rest when l need to. Luckily l read and craft so can always do them. It's very hard to adapt but that's life and l am so much better for off than younger people with my disease. Think positive. Judie Fisher - Do chores in small stretches, and have regular breaks. Diane Green - Adjust. I do what I can, and what I can't just has to wait. Raymond Richards - As they told us at the heart clinic, if you have something you HAVE to do - do it first. Janis St George - Listen to your body - rest awhile when you need to. Kaylene Samuels - Have a SCAN..... Seniors Compulsory Afternoon Nap. Image credits: Shutterstock

Body

5 items you’re cleaning too much

Cleaning the house is no easy feat. To make life a little easier for you, here are five items you are probably cleaning more than you need to. 1. Clothes worn once For particular items of clothing such as gym gear, shirts and tights it is fine to wash clothes after every wear. However, most other items can be worn up to three times advises Carolyn Forte, the director of the Cleaning Lab at the Good Housekeeping Institute. "Over-washing and over-drying fabrics can cause fading and wear,” she said. Studies have also shown that it is ideal to wash bath towels after three uses. 2. Dinner plates Instead of spending time rinsing your plates before putting them in the dishwasher, just make sure all the food is scrapped off. "Pre-washing dishes is a waste of time and energy,” said Carolyn. "If you aren't running it right away, let the dishwasher rinse them with a 'rinse only' cycle." 3. Light Fixtures It can be tempting to dust your light fixtures every week but Carolyn advises saving your strength from a different household task. She advises that you can get away with cleaning light fixtures once a month. 4. Jackets In the cooler months jackets are worn every day. However, this necessity only needs to be washed every three months. Jackets don’t usually come into contact with skin cells or natural oils, which allows them to go longer between washes than other clothes. 5. Curtains Curtains need to be washed if you get any marks on them but if they are in pristine condition, according to Carolyn they only need to be cleaned once a year. Image credits: Shutterstock

Home & Garden

Grave cleaning videos are going viral on TikTok. Are they honouring the dead, or exploiting them?

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/edith-jennifer-hill-1018412">Edith Jennifer Hill</a>, <a href="https://theconversation.com/institutions/flinders-university-972">Flinders University</a> and <a href="https://theconversation.com/profiles/marina-deller-947925">Marina Deller</a>, <a href="https://theconversation.com/institutions/flinders-university-972">Flinders University</a> Cleaning the graves of strangers is the latest content trend taking over TikTok. But as millions tune in to watch the videos, it’s becoming clear not all of them are created equal. Two grave-cleaning creators in particular seem to reside at opposite ends of the trend. One of the first accounts to gain popularity for grave cleaning was <a href="https://www.tiktok.com/@ladytaphos">@ladytaphos</a>. This account is run by Alicia Williams, a Virginia resident who treats the graves with great dignity. Williams will often share the story of the person residing within, and acts with grace and kindness as she restores beauty to the <a href="https://www.tiktok.com/@ladytaphos/video/7197894295641148714">graves</a>. On the other end of the spectrum is Kaeli Mae McEwen, or <a href="https://www.tiktok.com/@_the_clean_girl">@the_clean_girl</a>, who leans into more clickbait-y tactics. McEwen is known for throwing a pink spiky ball through a graveyard and cleaning the grave it lands on. She also uses her videos to promote her own pink foamy cleaner (which at one point could be purchased via a link in her bio). <h2>Cleaning and death</h2> While Williams’ and McEwen’s videos may seem novel to some, death and cleaning have a long and varied relationship that spans time and cultures. Washing a loved one’s body before burial or cremation isn’t just practical – it’s a significant <a href="https://www.theage.com.au/national/victoria/washing-and-dressing-our-dead-the-movement-challenging-how-we-grieve-20230510-p5d794.html">ritual</a> that provides meaning during a period of grief. In certain cultures and religions it’s also a process of purification, or preparation for the afterlife. Much has been written about cleaning and clearing out the homes of deceased people. Family members often won’t agree on how to approach such a task. In his <a href="https://theconversation.com/friday-essay-grief-and-things-of-stone-wood-and-wool-136721">essay on death and objects</a>, author Tony Birch writes about his mother clearing out his grandmother’s house. “My mother decided that our first task after her death was to empty out her Housing Commission flat and scrub it clean,” Birch writes. He first laments the move, but later recognises the value of cleaning together before sorting – and treasuring – the items his grandmother left behind. Margaretta Magnuson’s 2017 book, <a href="https://www.google.com.au/books/edition/The_Gentle_Art_of_Swedish_Death_Cleaning/uW00DwAAQBAJ?hl=en&gbpv=1&pg=PT7&printsec=frontcover">The Gentle Art of Swedish Death Cleaning</a>, is a humorous and thoughtful introduction to the Swedish movement of döstädning. The book (and subsequent <a href="https://www.sbs.com.au/ondemand/tv-series/the-gentle-art-of-swedish-death-cleaning">reality TV series</a>) has sparked various conversations on death and cleaning, and especially on cleaning before you yourself pass away so you don’t leave a mess for your loved ones. Grave cleaning can be seen as another continuation of caring for the deceased. People who decide to clean the graves of strangers may do so out of <a href="https://www.theguardian.com/society/2022/sep/04/how-gravetok-videos-of-cleaning-headstones-went-viral">respect</a>, or in an attempt to <a href="https://www.buzzfeed.com/alexalisitza/tiktok-woman-cleans-old-gravestones">give them “their name back”</a> (as names on graves become visible following the removal of debris). <h2>Two very different approaches</h2> Williams and McEwen are received quite differently by viewers. Anecdotally, viewers respond more positively to the calmer and more respectful cleaning videos by Williams, who takes time to explain the process while ensuring the correct products are used. Meanwhile, many find McEwen’s videos problematic and criticise her for not adhering to proper graveyard decorum. McEwen makes a spectacle of sites of mourning, such as by pretending to vacuum graves, replacing flowers placed by others and making jokes. Viewers also speculate the products she uses may cause damage to the graves. Perceived intent plays a role in how each creator’s content is received. While Williams focuses on respectfully restoring graves to their former glory, McEwen positions herself as the focus and merely uses the graves for content. <h2>A complex emotional object</h2> Similar to other funerary objects such as coffins and urns, graves are associated with both the person who died and the fact of their death. As such, they are emotionally complex objects that bring both strength and sadness to those left behind. But graves are unique also in that they are private objects of grief exposed in a public context. Anyone visiting the graveyard can view and interact with them. Does that make them “fair game” for content creators? Graves don’t just represent deceased loved ones. They can also act as stand-ins in their absence, becoming stone bodies of sorts. As sociologist Margaret Gibson describes in her book <a href="https://www.mup.com.au/books/objects-of-the-dead-paperback-softback">Objects of the Dead: Mourning and Memory in Everyday Life</a>, “death reconstructs our experience of objects”. “There is the strangeness of realising that things have outlived persons, and, in this regard, the materiality of things is shown to be more permanent than the materiality of the body,” she says. Caring for and cleaning graves can therefore be interpreted as caring for the deceased, by extending their existence through the materiality of their resting place. Psychological researcher <a href="https://www.tandfonline.com/doi/abs/10.1080/1600910X.2018.1521339">Svend Brinkmann asserts</a> artefacts such as graves are “culturally sanctioned”, gaining “significance from a collective system of meaning”. In other words, we as a community create and uphold reverence for such items. This is partly why the desecration of graves is viewed as abhorrent. It is societally understood to be a desecration of the person themselves. It’s also why content creators must tread lightly. <h2>A reason for haunting?</h2> There are ways to interact with gravestones (and even create content) which acknowledge their complexity and connection to their owners. TikTok creator Rosie Grant (<a href="https://www.tiktok.com/@ghostlyarchive?lang=en">@ghostlyarchive</a>) bakes recipes found on headstones and records the process. She has even met with the families of the deceased <a href="https://www.independent.co.uk/life-style/food-and-drink/defining-dishes-ghostly-archive-tiktok-b2414122.html">to make the recipes together</a> and learn more about the people behind the engraving-worthy food. However, randomly cleaning the graves of strangers is fraught territory – and rife with potential privacy issues. It isn’t clear whether McEwen seeks permission from loved ones before cleaning graves, but contextually this seems unlikely. <a href="https://www.youtube.com/watch?v=nKkOS2GjCxk">Recent discussions</a> have also uncovered questionable editing in her videos. Some graves in her before-and-after videos have been edited to appear cleaner and to have their structure altered. McEwen’s pink foaming cleaner also appears to be a blue cleaner edited to appear pink, raising even more questions about intent and responsibility. While McEwen claims to be “honouring” lives by cleaning “final resting places”, the consensus from viewers is her actions are dishonourable. As one host <a href="https://www.youtube.com/watch?v=nKkOS2GjCxk">commented on a in podcast</a> discussing McEwen cleaning a baby’s grave while speaking in a kiddish voice: “F**k you, you’re going to get haunted.”<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/240553/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/edith-jennifer-hill-1018412">Edith Jennifer Hill</a>, Associate Lecturer, Learning & Teaching Innovation, <a href="https://theconversation.com/institutions/flinders-university-972">Flinders University</a> and <a href="https://theconversation.com/profiles/marina-deller-947925">Marina Deller</a>, Casual Academic, Creative Writing and English Literature, <a href="https://theconversation.com/institutions/flinders-university-972">Flinders University</a> Image credits: Shutterstock 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/grave-cleaning-videos-are-going-viral-on-tiktok-are-they-honouring-the-dead-or-exploiting-them-240553">original article</a>. </div>

Caring

Yes, you do need to clean your tongue. Here’s how and why

<div class="theconversation-article-body"> <a href="https://theconversation.com/profiles/dileep-sharma-1562149">Dileep Sharma</a>, <a href="https://theconversation.com/institutions/university-of-newcastle-1060">University of Newcastle</a> Has your doctor asked you to stick out your tongue and say “aaah”? While the GP assesses your throat, they’re also checking out your tongue, which can reveal a lot about your health. The doctor will look for any changes in the tongue’s surface or how it moves. This can indicate issues in the mouth itself, as well as the state of your overall health and immunity. But there’s no need to wait for a trip to the doctor. Cleaning your tongue <a href="https://pubmed.ncbi.nlm.nih.gov/21797979/">twice a day</a> can help you check how your tongue looks and feels – and improve your breath. <h2>What does a healthy tongue look like?</h2> Our tongue plays a crucial role in eating, talking and other vital functions. It is not a single muscle but rather a muscular organ, made up of eight muscle pairs that help it move. The surface of the tongue is covered by tiny bumps that can be seen and felt, called papillae, giving it a rough surface. These are sometimes mistaken for taste buds – they’re not. Of your 200,000-300,000 papillae, only a small fraction contain taste buds. Adults have up to 10,000 taste buds and they are invisible to the naked eye, concentrated mainly on the tip, sides and back of the tongue. <figure><iframe src="https://www.youtube.com/embed/uYvpUl7li9Y?wmode=transparent&start=0" width="440" height="260" frameborder="0" allowfullscreen="allowfullscreen"></iframe></figure> A healthy tongue is pink although the shade may vary from person to person, ranging from dark to light <a href="https://my.clevelandclinic.org/health/symptoms/24600-tongue-color">pink</a>. A small amount of white coating can be normal. But significant changes or discolouration may indicate a disease or <a href="https://www.healthline.com/health/tongue-problems-2">other issues</a>. <h2>How should I clean my tongue?</h2> Cleaning your tongue only takes around 10-15 seconds, but it’s is a good way to check in with your health and can easily be incorporated into your teeth brushing routine. You can clean your tongue by gently scrubbing it with a regular toothbrush. This dislodges any food debris and helps prevent microbes building up on its rough textured surface. Or you can use a special <a href="https://pubmed.ncbi.nlm.nih.gov/26865433/">tongue scraper</a>. These curved instruments are made of metal or plastic, and can be used alone or accompanied by scrubbing with your toothbrush. Your co-workers will thank you as well – cleaning your tongue can help combat <a href="https://pubmed.ncbi.nlm.nih.gov/24165218/">stinky breath</a>. Tongue scrapers are particularly <a href="https://pubmed.ncbi.nlm.nih.gov/15341360/">effective</a> at removing the bacteria that commonly causes bad breath, hidden in the tongue’s surface. <h2>What’s that stuff on my tongue?</h2> So, you’re checking your tongue during your twice-daily clean, and you notice something different. Noting these signs is the first step. If you observe any changes and they worry you, you should talk to your GP. Here’s what your tongue might be telling you. White coating Developing a white coating on the tongue’s surface is one of the <a href="https://pubmed.ncbi.nlm.nih.gov/31309703/">most common changes</a> in healthy people. This can happen if you stop brushing or scraping the tongue, even for a few days. In this case, food debris and microbes have accumulated and caused plaque. Gentle scrubbing or scraping will remove this coating. Removing microbes reduces the risk of chronic infections, which can be transferred to other organs and cause <a href="https://www.nature.com/articles/s41368-022-00163-7">serious illnesses</a>. Yellow coating This may indicate oral thrush, a <a href="https://www.nidirect.gov.uk/conditions/oral-thrush-adults">fungal infection</a> that leaves a raw surface when scrubbed. Oral thrush is <a href="https://www.aafp.org/pubs/afp/issues/2008/1001/p845.html">common</a> in elderly people who take multiple medications or have diabetes. It can also affect children and young adults after an illness, due to the temporary <a href="https://pubmed.ncbi.nlm.nih.gov/7636666/">suppression of the immune system</a> or <a href="https://www.stanfordchildrens.org/en/topic/default?id=candidiasis-in-children-90-P01888">antibiotic</a> use. If you have oral thrush, a doctor will usually prescribe a course of anti-fungal medication for at least a month. Black coating Smoking or consuming a lot of strong-coloured food and drink – such as tea and coffee, or dishes with tumeric – can cause a furry appearance. This is known as a <a href="https://my.clevelandclinic.org/health/diseases/17918-black-hairy-tongue">black hairy tongue</a>. It’s not hair, but an overgrowth of bacteria which may indicate poor oral hygiene. Pink patches Pink patches surrounded by a white border can make your tongue look like a map – this is called “<a href="https://www.mayoclinic.org/diseases-conditions/geographic-tongue/symptoms-causes/syc-20354396">geographic tongue</a>”. It’s <a href="https://www.mayoclinic.org/diseases-conditions/geographic-tongue/diagnosis-treatment/drc-20354401">not known</a> what causes this condition, which usually doesn’t require treatment. Pain and inflammation A red, sore tongue can indicate a <a href="https://medlineplus.gov/ency/article/003047.htm">range of issues</a>, including: <ul> <li>nutritional deficiencies such as folic acid or vitamin B12</li> <li>diseases including <a href="https://my.clevelandclinic.org/health/diseases/22377-pernicious-anemia">pernicious</a> anaemia, <a href="https://www.rch.org.au/kidsinfo/fact_sheets/kawasaki_disease/">Kawasaki disease</a> and <a href="https://www.childrens.health.qld.gov.au/health-a-to-z/scarlet-fever">scarlet fever</a></li> <li>inflammation known as <a href="https://www.ncbi.nlm.nih.gov/books/NBK560627/">glossitis</a></li> <li>injury from hot beverages or food</li> <li>ulcers, including cold sores and canker sores</li> <li><a href="https://www.nidcr.nih.gov/health-info/burning-mouth">burning mouth syndrome</a>.</li> </ul> Dryness Many medications can cause dry mouth, also called xerostomia. These include antidepressants, anti-psychotics, muscle relaxants, pain killers, antihistamines and diuretics. If your mouth is very dry, it may hurt. <h2>What about cancer?</h2> White or red patches on the tongue that can’t be scraped off, are long-standing or growing need to checked out by a dental professional as soon as possible, as do painless ulcers. These are at a <a href="https://oralcancerfoundation.org/cdc/premalignant-lesions/">higher risk</a> of turning into cancer, compared to other parts of the mouth. <a href="https://pubmed.ncbi.nlm.nih.gov/36852511/">Oral cancers</a> have low survival rates due to delayed detection – and they are on the rise. So <a href="https://youtu.be/Y6QkKhEjS5M">checking your tongue</a> for changes in colour, texture, sore spots or ulcers is <a href="https://www.dhsv.org.au/oral-health-programs/oral-cancer-screening-and-prevention">critical</a>.<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/237130/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/dileep-sharma-1562149">Dileep Sharma</a>, Professor and Head of Discipline - Oral Health, <a href="https://theconversation.com/institutions/university-of-newcastle-1060">University of Newcastle</a> Image credits: Shutterstock 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-you-do-need-to-clean-your-tongue-heres-how-and-why-237130">original article</a>. </div>

Body

For a century, it’s been illegal to swim in the Seine. Will Paris’s clean-up make the river safe for Olympic swimmers?

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/ian-a-wright-5162">Ian A. Wright</a>, <a href="https://theconversation.com/institutions/western-sydney-university-1092">Western Sydney University</a> Five eagerly anticipated events in the Paris Olympics will be the mens and womens 10 kilometre marathon swimming races, as well as the 1,500 metre swimming section of three triathlon events. Why? Because all will be held in the Seine River in the centre of Paris. The swimmers – including <a href="https://www.swimmingworldmagazine.com/news/trio-complete-an-historic-australian-olympic-marathon-swim-team-for-paris-2024">four Australians</a> – will pass famous landmarks such as the Musee d'Orsay as they swim through the historic heart of the city. This will have enormous scenic appeal for spectators. But will it be safe for swimmers? Rivers running through large cities are <a href="https://www.nature.com/articles/s42949-021-00026-w">often polluted</a>, whether from stormwater, chemical pollution or wastewater spills. As the marathon swimmers pass the <a href="https://musee-egouts.paris.fr/en/">Paris Sewer Museum</a>, they may well wonder if they’re in clean water. For more than 100 years, swimming in the Seine has actually been illegal, due to concerns over what the water could do to human health. Authorities <a href="https://www.theguardian.com/sport/article/2024/may/24/olympic-games-clean-up-aims-to-leave-parisians-swimming-in-the-seine">have been working</a> to clean up the water, spending A$2.2 billion (€1.3 billion) on improving water quality. The goal: cut bacterial contamination by 75% before the first swimmer touches the water. These measures are having an impact – but recent heavy rains have seen bacteria levels spike. While officials have put on brave faces, there’s now a <a href="https://www.reuters.com/sports/olympics/paris-2024-sets-up-reserve-site-marathon-swimming-if-seine-unsuitable-2024-07-05/">contingency plan</a> in case the Seine isn’t safe. <h2>Why swim in the Seine at all?</h2> Urban rivers have a questionable reputation. But this isn’t the first time the Seine River has been used for Olympic swimming. In the 1900 Paris Olympics, <a href="https://olympics.com/en/olympic-games/paris-1900/results/swimming">seven swimming events</a> were all held in the river. These games were the first modern Olympics where <a href="https://olympics.com/ioc/faq/history-and-origin-of-the-games/when-did-women-first-compete-in-the-olympic-games">women could compete</a> in some sports, but swimming was not one of those permitted. The Australian swimmer who competed, Frederick Lane, had to swim under the United Kingdom’s flag as Australia did not have a flag until Federation the following year. He won two gold medals. One was for the 200 metre freestyle race, and the other for a bizarre race never held again: the 200m <a href="https://www.olympedia.org/results/4433">swimming obstacle race</a>, where swimmers had to climb over poles and boats. These Olympics also saw the first and last underwater swimming race, which was also in the Seine. <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/606823/original/file-20240715-17-kajph6.jpg?ixlib=rb-4.1.0&q=45&auto=format&w=1000&fit=clip"><img src="https://images.theconversation.com/files/606823/original/file-20240715-17-kajph6.jpg?ixlib=rb-4.1.0&q=45&auto=format&w=754&fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/606823/original/file-20240715-17-kajph6.jpg?ixlib=rb-4.1.0&q=45&auto=format&w=600&h=378&fit=crop&dpr=1 600w, https://images.theconversation.com/files/606823/original/file-20240715-17-kajph6.jpg?ixlib=rb-4.1.0&q=30&auto=format&w=600&h=378&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/606823/original/file-20240715-17-kajph6.jpg?ixlib=rb-4.1.0&q=15&auto=format&w=600&h=378&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/606823/original/file-20240715-17-kajph6.jpg?ixlib=rb-4.1.0&q=45&auto=format&w=754&h=475&fit=crop&dpr=1 754w, https://images.theconversation.com/files/606823/original/file-20240715-17-kajph6.jpg?ixlib=rb-4.1.0&q=30&auto=format&w=754&h=475&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/606823/original/file-20240715-17-kajph6.jpg?ixlib=rb-4.1.0&q=15&auto=format&w=754&h=475&fit=crop&dpr=3 2262w" alt="historic photo swimming seine river paris" /></a><figcaption>Swimmers took to the Seine’s waters at the 1900 Paris Olympics, when the river ran cleaner. <a class="source" href="https://commons.wikimedia.org/wiki/File:Swimming_1900.jpg">Wikimedia Commons</a>, <a class="license" href="http://creativecommons.org/licenses/by/4.0/">CC BY</a></figcaption></figure> Back then, the waters of the Seine were cleaner. That’s because there was a great demand for human waste on farms – and cities were the main source. Back then, “night soil” (human waste) had a <a href="https://hess.copernicus.org/articles/11/1757/2007/hess-11-1757-2007.pdf">real market value</a>. No one would think of dumping it in rivers. But as time went on, sewerage systems developed and other fertilisers such as guano and mineral fertilisers arrived. By the early 20th century, most of the city’s wastewater went into the Seine. In 1923, the swimming ban came into effect. A year later, Paris hosted the Olympics for its second time – and swimmers competed in 50 metre pools. In recent years, many cities around the world have worked to clean up their urban waterways. River swimming is <a href="https://www.timeout.com/news/the-european-cities-cleaning-up-rivers-for-wild-swimmers-101821">now common</a> in cities such as Copenhagen, Berlin and Vienna, where river health has improved dramatically. <h2>How can you clean a river like the Seine?</h2> Cleaning the Seine is a challenge. Paris is home to 11 million people, with plenty of industry. Urban rivers are almost inevitably polluted by waste from the <a href="https://www.nature.com/articles/s42949-021-00026-w%5D">surrounding city</a>. Leaking and overflowing sewage systems are a major source of pollution. In places like the UK, <a href="https://www.bbc.com/news/explainers-62631320">sewage spills</a> into waterways have become a major political issue. When wastewater spills into rivers, it carries pollutants and dangerous loads of <a href="https://www.cdc.gov/mmwr/volumes/67/wr/mm6725a1.htm">disease-causing microorganisms</a>, such as Escherichia coli (commonly known as E. coli). Untreated water can have viruses, bacteria and disease-causing protozoa. In the lead-up to the Paris games, authorities have been working to improve water quality enough to bring some Olympic swimming back to the Seine. Stormwater – often contaminated by dog poo or sewage overflows – is <a href="https://www.theguardian.com/environment/2023/oct/08/can-paris-clean-seine-for-next-year-2024-olympics">being cleaned</a> before it is released into the river. Despite the money and effort, there are still real questions over whether it will be enough to guarantee swimmer safety. Bacterial levels hit risky levels <a href="https://edition.cnn.com/2024/07/11/sport/paris-olympics-seine-triathlon-bacteria-spiking-intl/index.html">most days in June</a> due to unseasonally heavy rains, but the water has <a href="https://www.france24.com/en/france/20240712-seine-clean-enough-to-swim-for-most-of-past-12-days-paris-says-ahead-of-olympics">improved in July</a>. This week, French sports minister Amélie Oudéa-Castéra <a href="https://www.nbclosangeles.com/paris-2024-summer-olympics/french-sports-minister-takes-dip-in-seine-river-2024-paris-olympics/3458469/">swam a few metres</a> in the Seine in an effort to douse concerns. By contrast, the other Olympic swimming events will take place in a recently constructed 50 metre pool, which will have very good water quality. The pool water is filtered and treated with a disinfectant such as chlorine or bromine. It will be regularly tested to ensure optimal water quality. At the Tokyo 2020 Olympics, triathletes had to swim in polluted Tokyo Bay. But similar concerns over sickness proved unfounded. The real challenge was the <a href="https://www.theguardian.com/environment/2021/aug/05/olympic-athletes-and-volunteers-in-tokyo-tortured-by-heat">oppressive heat</a>. <h2>What’s at risk?</h2> The most likely outcome if races are held when bacterial levels are unsafe would be getting a gastrointestinal bug. Officials have some control over this. Contamination is worst after heavy rain. Races could be delayed if need be. Many swimmers – especially those who compete in open-water competitions – are familiar with swimming in water with some level of pollution. Some see it as worth the risk. Italian double world champion swimmer Gregorio Paltrinieri <a href="https://www.france24.com/en/live-news/20240226-paris-holds-its-breath-for-olympic-swimming-events-in-murky-seine">said in January</a>: <blockquote> Even if the water is dirty, I would rather swim in an electric atmosphere in the centre of Paris than in an anonymous stretch of water. </blockquote> Paris 2024 organisers previously warned there was no plan B for the 10 km marathon races in the Seine if water quality testing is unsuitable. But this has now changed. If the river isn’t clean enough, open water swimming <a href="https://www.reuters.com/sports/olympics/paris-2024-sets-up-reserve-site-marathon-swimming-if-seine-unsuitable-2024-07-05/">will be moved</a> to the rowing venue. The Olympic triathlon is planned around a swimming leg in the Seine. But triathletes <a href="https://www.espn.com.au/olympics/story/_/id/39912675/triathlon-leg-cancelled-seine-quality-paris-2024-chief">have been told</a> the swim leg could be skipped if the water is unsafe, which would turn the race into a running and cycling duathlon. As the world’s attention turns to Paris, there will be many anxious officials behind the scenes hoping their hard work on making the Seine swimmable pays off.<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/231705/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/ian-a-wright-5162">Ian A. Wright</a>, Associate Professor in Environmental Science, <a href="https://theconversation.com/institutions/western-sydney-university-1092">Western Sydney University</a> Image credits: CARON/ZEPPELIN/SIPA/Shutterstock Editorial 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/for-a-century-its-been-illegal-to-swim-in-the-seine-will-pariss-clean-up-make-the-river-safe-for-olympic-swimmers-231705">original article</a>. </div>

Travel Trouble

Walking or running: for the same distance, which consumes more energy?

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/clement-lemineur-1529211">Clément Lemineur</a>, <a href="https://theconversation.com/institutions/universite-cote-dazur-2917">Université Côte d’Azur</a>; <a href="https://theconversation.com/profiles/clement-naveilhan-1495411">Clément Naveilhan</a>, <a href="https://theconversation.com/institutions/universite-cote-dazur-2917">Université Côte d’Azur</a>, and <a href="https://theconversation.com/profiles/francois-dernoncourt-1495410">François Dernoncourt</a>, <a href="https://theconversation.com/institutions/universite-cote-dazur-2917">Université Côte d’Azur</a> It’s Monday morning, the alarm goes off and it’s already 7:30 a.m. – and you’re 30 minutes late. Normally you need 45 minutes to walk the 3 kilometres to work, but this morning you’ll be running for 20 minutes. Yes, but by lunchtime you’re feeling more tired and you have the impression that you’ve expended more energy than usual on the trip. Yet you’ve covered the same distance as on the other days. How can this be? The calorie expenditure associated with any activity is called the “metabolic cost”, and corresponds to the energy consumed by our organs to cover a given distance. This metabolic cost can be determined by analysing the oxygen our bodies consume and the carbon dioxide they produce, we can estimate the amount of energy expended, and thus the metabolic cost. It was using this method that <a href="https://pubmed.ncbi.nlm.nih.gov/692303/">researchers had already answered our question back in the 1970s</a>. Perhaps not surprisingly, running consumes more energy than walking for the same distance covered. But why? <h2>Energy lost when running</h2> Imagine you’re watching someone running. Now look closely at the vertical movement (up and down) of their pelvis and head. As you can see from the diagram below, when we run, the distance that our body moves up and down is greater than when we walk. To produce this vertical movement, the muscles of the lower limbs have to generate more force, and that consumes more energy, yet doesn’t bring us any closer to our destination. So when running, part of the energy expended is used to move our bodies <a href="https://pubmed.ncbi.nlm.nih.gov/16029949/">upward rather than forward</a>. The energy needed to cover those 3 km is therefore higher for running than for walking. <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/602769/original/file-20240625-18-xilv63.png?ixlib=rb-4.1.0&q=45&auto=format&w=1000&fit=clip"><img src="https://images.theconversation.com/files/602769/original/file-20240625-18-xilv63.png?ixlib=rb-4.1.0&q=45&auto=format&w=754&fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/602769/original/file-20240625-18-xilv63.png?ixlib=rb-4.1.0&q=45&auto=format&w=600&h=287&fit=crop&dpr=1 600w, https://images.theconversation.com/files/602769/original/file-20240625-18-xilv63.png?ixlib=rb-4.1.0&q=30&auto=format&w=600&h=287&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/602769/original/file-20240625-18-xilv63.png?ixlib=rb-4.1.0&q=15&auto=format&w=600&h=287&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/602769/original/file-20240625-18-xilv63.png?ixlib=rb-4.1.0&q=45&auto=format&w=754&h=361&fit=crop&dpr=1 754w, https://images.theconversation.com/files/602769/original/file-20240625-18-xilv63.png?ixlib=rb-4.1.0&q=30&auto=format&w=754&h=361&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/602769/original/file-20240625-18-xilv63.png?ixlib=rb-4.1.0&q=15&auto=format&w=754&h=361&fit=crop&dpr=3 2262w" alt="Illustration of the oscillations of running and walking" /></a><figcaption>Running involves much greater vertical oscillation of the centre of mass than walking. This is the main reason why running consumes more energy than walking for the same distance covered. François Dernoncourt, Fourni par l'auteur</figcaption></figure> This difference between walking and running is not confined to what happens during the activity itself. In fact, each physical exercise causes a delayed expenditure of energy, which is added to the expenditure during the activity. Taking this into account, it’s once again running that uses more energy than walking. Immediately after running your 3 km, the increased energy consumption (compared with resting) lasts for several minutes, mainly because of the increase in body temperature and the replenishment of energy reserves. This additional expenditure after running is <a href="https://pubmed.ncbi.nlm.nih.gov/22446673/">more than twice that observed after walking</a>, due to the difference in intensity between the two exercises. <h2>It all depends on speed</h2> Running therefore involves a higher calorie expenditure than walking for the same distance covered. But this is on condition that the walking speed considered is “normal” (around 5 km/h). So, if we walk very slowly, it will take us so long to cover the 3 km that the calorie expenditure will be greater in the end. This is because the body expends a certain amount of energy per unit of time no matter what, regardless of the activity performed (known as the “basal metabolic rate”). The same applies if the walking speed is very fast (<a href="https://pubmed.ncbi.nlm.nih.gov/29925582/">more than 8 km/h</a>): running is more energy-efficient. Here, the coordination required to walk at such a speed means that we need to activate our muscles more, without being able to take advantage of the elasticity of our tendons, as is the case with running. Moreover, we have a very precise intuitive perception of the energy efficiency of a particular style of movement. If we’re on a treadmill whose speed gradually increases, the point at which we spontaneously switch from walking to running coincides with the <a href="https://www.sciencedirect.com/science/article/pii/S096663622100120X">moment when it would become more energy-consuming to walk than to run</a>. <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/604700/original/file-20240703-17-4dlrj.jpg?ixlib=rb-4.1.0&q=45&auto=format&w=1000&fit=clip"><img src="https://images.theconversation.com/files/604700/original/file-20240703-17-4dlrj.jpg?ixlib=rb-4.1.0&q=45&auto=format&w=754&fit=clip" sizes="(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px" srcset="https://images.theconversation.com/files/604700/original/file-20240703-17-4dlrj.jpg?ixlib=rb-4.1.0&q=45&auto=format&w=600&h=395&fit=crop&dpr=1 600w, https://images.theconversation.com/files/604700/original/file-20240703-17-4dlrj.jpg?ixlib=rb-4.1.0&q=30&auto=format&w=600&h=395&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/604700/original/file-20240703-17-4dlrj.jpg?ixlib=rb-4.1.0&q=15&auto=format&w=600&h=395&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/604700/original/file-20240703-17-4dlrj.jpg?ixlib=rb-4.1.0&q=45&auto=format&w=754&h=497&fit=crop&dpr=1 754w, https://images.theconversation.com/files/604700/original/file-20240703-17-4dlrj.jpg?ixlib=rb-4.1.0&q=30&auto=format&w=754&h=497&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/604700/original/file-20240703-17-4dlrj.jpg?ixlib=rb-4.1.0&q=15&auto=format&w=754&h=497&fit=crop&dpr=3 2262w" alt="" /></a><figcaption>Modelling of metabolic cost (kilocalories expended per kilogram per kilometre covered) as a function of speed (kilometres per hour) for walking and running. The curves cross at a certain speed (purple line; around 8 km/h): this means that above this speed, walking becomes more energy-intensive than running. It’s at around this threshold speed that people spontaneously switch from walking to running. François Dernoncourt, Adapted from Summerside et al, Fourni par l'auteur</figcaption></figure> In conclusion, because of greater oscillation of the centre of mass and increased energy expenditure after exercise, running to work is more energy-intensive than covering the same distance by walking. But remember, whether you choose to walk or run to work, the most important thing is that you’re already saving energy!<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/233943/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/clement-lemineur-1529211">Clément Lemineur</a>, Doctorant en Sciences du Mouvement Humain, <a href="https://theconversation.com/institutions/universite-cote-dazur-2917">Université Côte d’Azur</a>; <a href="https://theconversation.com/profiles/clement-naveilhan-1495411">Clément Naveilhan</a>, Doctorant en Sciences du Mouvement Humain, <a href="https://theconversation.com/institutions/universite-cote-dazur-2917">Université Côte d’Azur</a>, and <a href="https://theconversation.com/profiles/francois-dernoncourt-1495410">François Dernoncourt</a>, Doctorant en Sciences du Mouvement Humain, <a href="https://theconversation.com/institutions/universite-cote-dazur-2917">Université Côte d’Azur</a> Image credits: Shutterstock 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/walking-or-running-for-the-same-distance-which-consumes-more-energy-233943">original article</a>. </div>

Body

How would a switch to nuclear affect electricity prices for households and industry?

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/roger-dargaville-1832">Roger Dargaville</a>, <a href="https://theconversation.com/institutions/monash-university-1065">Monash University</a> Peter Dutton has announced that under a Coalition government, seven nuclear power stations would be built around the country over the next 15 years. Experts have declared nuclear power would be <a href="https://www.abc.net.au/news/2024-06-20/power-prices-wont-fall-with-nuclear/103998172">expensive</a> and <a href="https://www.afr.com/politics/federal/nuclear-to-cost-17b-and-take-until-2040-to-build-csiro-20240521-p5jfaj#:%7E:text=Nuclear%20could%20cost%20up%20to,until%202040%20to%20build%3A%20CSIRO&text=Peter%20Dutton's%20nuclear%20energy%20plans,operational%20until%20at%20least%202040.">slow to build</a>. But what might happen to energy prices if the Coalition were to win government and implement this plan? <h2>How might we estimate the cost of nuclear?</h2> By 2035, 50–60% of the existing coal-fired fleet will very likely <a href="https://aemo.com.au/-/media/files/stakeholder_consultation/consultations/nem-consultations/2023/draft-2024-isp-consultation/draft-2024-isp.pdf">have been retired</a>, including Vales Point B, Gladstone, Yallourn, Bayswater and Eraring – all of which will have passed 50 years old. These five generators contribute just over 10 gigawatts of capacity. It’s probably not a coincidence that the seven nuclear plants proposed by Dutton would also contribute roughly 10 gigawatts in total if built. Neither my team at Monash University nor the Australian Energy Market Operator has run modelling scenarios to delve into the details of what might happen to electricity prices under a high-uptake nuclear scenario such as the one proposed by the Coalition. That said, we can make some broad assumptions based on a metric known as the “levelised cost of electricity”. This value takes into account: <ul> <li> how much it costs to build a particular technology </li> <li> how long it takes to build </li> <li> the cost to operate the plant </li> <li> its lifetime </li> <li> and very importantly, its capacity factor. </li> </ul> Capacity factor is how much electricity a technology produces in real life, compared with its theoretical maximum output. For example, a nuclear power station would likely run at 90–95% of its full capacity. A solar farm, on the other hand, will run at just 20–25% of its maximum, primarily because it’s night for half of the time, and cloudy some of the time. CSIRO recently published its <a href="https://www.csiro.au/en/research/technology-space/energy/gencost">GenCost</a> report, which outlines the current and projected build and operational costs for a range of energy technologies. It reports that large-scale nuclear generated electricity would cost between A$155 and $252 per megawatt-hour, falling to between $136 and $226 per megawatt-hour by 2040. The report bases these costs on recent projects in South Korea, but doesn’t consider some other cases where costs have blown out dramatically. The most obvious case is that of <a href="https://www.edf.fr/en/the-edf-group/dedicated-sections/journalists/all-press-releases/hinkley-point-c-update-1">Hinkley Point C nuclear plant</a> in the United Kingdom. This <a href="https://www.reuters.com/business/energy/edfs-nuclear-project-britain-pushed-back-2029-may-cost-up-34-bln-2024-01-23/">3.2GW</a> plant, which is being built by French company EDF, was recently <a href="https://www.edf.fr/en/the-edf-group/dedicated-sections/journalists/all-press-releases/hinkley-point-c-update-1">reported</a> to be now costing around £34 billion (about A$65 billion). That’s about A$20,000 per kilowatt. CSIRO’s GenCost report assumed a value of $8,655 per kilowatt for nuclear, so the true levelised cost of electricity of nuclear power in Australia may end up being twice as expensive as CSIRO has calculated. <hr /> <iframe id="Aryx7" class="tc-infographic-datawrapper" style="border: none;" src="https://datawrapper.dwcdn.net/Aryx7/4/" width="100%" height="400px" frameborder="0"></iframe> <hr /> <h2>Other factors play a role, too</h2> Another factor not accounted for in the GenCost assumptions is that Australia does not have a nuclear industry. Virtually all the niche expertise would need to be imported. And very large infrastructure projects have a nasty habit of <a href="https://www.cis.org.au/publication/bungles-blowouts-and-boondoggles-why-australias-infrastructure-projects-cost-more-than-they-should/">blowing out in cost</a> – think of Snowy 2.0, Sydney’s light rail project, and the West Gate Tunnel in Victoria. Reasons include higher local wages, regulations and standards plus aversion from lenders to risk that increases cost of capital. These factors would not bode well for nuclear. In CSIRO’s GenCost report, the levelised cost of electricity produced from coal is $100–200 per megawatt-hour, and for gas it’s $120–160 per megawatt-hour. Solar and wind energy work out to be approximately $60 and $90 per megawatt-hour, respectively. But it’s not a fair comparison, as wind and solar are not “dispatchable” but are dependent on the availability of the resource. When you combine the cost of a mix of wind and solar energy and storage, along with the cost of getting the renewable energy into the grid, renewables end up costing $100–120 per megawatt-hour, similar to coal. If we were to have a nuclear-based system (supplemented by gas to meet the higher demands in the mornings and evenings), the costs would likely be much higher – potentially as much as three to four times if cost blowouts similar to Hinkley Point C were to occur (assuming costs were passed on to electricity consumers. Otherwise, taxpayers in general would bear the burden. Either way, it’s more or less the same people). <h2>But what about the impact on your household energy bill?</h2> Well, here the news is marginally better. Typical retail tariffs are 25-30 cents per kilowatt-hour, which is $250–300 per megawatt-hour. The largest component of your energy bill is not the cost of generation of the electricity; rather, it’s the cost of getting the power from the power stations to your home or business. In very approximate terms, this is made up of the market average costs of generation, transmission and distribution, as well as retailer margin and other minor costs. The transmission and distribution costs will not be significantly different under the nuclear scenario compared with the current system. And the additional transmission costs associated with the more distributed nature of renewables (meaning these renewable projects are all over the country) is included in the estimate. According to my back-of-the-envelope calculations, your retail tariff under the nuclear scenario could be 40–50c per kilowatt-hour. But if you are a large energy consumer such as an aluminium smelter, you pay considerably less per kilowatt-hour as you don’t incur the same network or retailer costs (but the cost of generating electricity in the first place makes up a much bigger proportion of the total cost). So if the cost of electricity generation soars, this hypothetical aluminium smelter’s energy costs will soar too. This would be a severe cost burden on Australian industry that has traditionally relied on cheap electricity (although it’s been a while since electricity could be described as cheap). <h2>A likely increase in energy costs</h2> In summary, in a free market, it is very unlikely nuclear could be competitive. But if a future Coalition government were to bring nuclear into the mix, energy costs for residential and especially industrial customers would very likely increase.<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/232913/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/roger-dargaville-1832">Roger Dargaville</a>, Director Monash Energy Institute, <a href="https://theconversation.com/institutions/monash-university-1065">Monash University</a> Image credits: Shutterstock 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-would-a-switch-to-nuclear-affect-electricity-prices-for-households-and-industry-232913">original article</a>. </div>

Money & Banking

How to sign up for energy bill relief

In the face of rising living costs, thousands of Australians have turned to their energy providers for financial assistance, highlighting the community spirit and support available during these challenging times. Energy companies like AGL Australia and Energy Australia are stepping up to help their customers manage their bills and find relief. AGL Australia has seen a significant increase in its financial hardship program, with 10,000 customers joining in the past year. Energy Australia receives 1,000 calls every weekday from customers seeking bill relief. These numbers reflect the proactive measures Australians are taking to manage their expenses and the readiness of energy providers to offer support. Crystal Noronha, who has worked at the AGL call centre for 11 years, has witnessed firsthand the growing need for assistance. "There's a lot of distress in their voice, there's anxiety," Noronha <a href="https://www.9news.com.au/national/thousands-of-customers-signing-up-for-energy-bill-relief-with-millions-more-eligible/9dc9535b-f94b-42f4-aeaf-6534dc898df2" target="_blank" rel="noopener">shared with 9NEWS</a>. "Some hide away from sharing their difficulties, but we're here to help them." Customers need not face extreme financial hardship to seek help, as everyone is eligible for some form of assistance. Gavin Dufty, from the charity St Vincent De Paul, underscores the commitment of energy companies to support their customers. "Every energy company has a legal obligation to provide support for all households regardless," Dufty explains. The assistance offered varies based on the provider and individual circumstances, ranging from bill extensions and more manageable payment plans to, in some cases, complete debt waivers. Adding to this support, the federal government is taking significant steps to ease the burden on households. Starting July 1, every household will receive a $300 credit into their energy account, providing substantial relief. Additionally, a free government website is available for customers to compare energy plan prices and find the most cost-effective options. These measures reflect a collaborative effort between energy providers and the government to ensure Australians can navigate the financial challenges of today's world. By offering practical solutions and financial relief, they are making a positive impact on the lives of many, ensuring that no one is left to face these difficulties alone. Image: Getty

Money & Banking

5 ways to fake a clean bathroom

Got a friend popping around for a catch up, and, your bathroom is less than sparkling? Don’t stress. Follow our foolproof tips to fake it so no one knows you didn’t have time to do a proper clean. 1. Scrub the loo The toilet is often a telltale sign that your bathroom is in need of a clean. If you haven’t already invested in a leave-in cleaner for your bowl, simply get in there with some toilet cleaner and give a good squirt under the rim. Leave it to do its job while you get on with the rest of the bathroom. Then when it’s had a few minutes to soak, give it a once over with the toilet brush. Grab some toilet paper (or an antibacterial wipe) and give the rim and the top of the toilet a once over to remove any dust. 2. Eliminate any obvious mould and grime Find yourself some good-quality mould spray that you can apply and then leave to work its magic while you move on to other areas of the bathroom. After 10 minutes (check your packet for the optimal time) you should be able to spray it with warm water from the shower and then wipe it clean. 3. Do a quick dust bust Grab yourself a clean cloth or antibacterial wipe and go over the shelves and basin to get rid of any dust or dirt you can see. 4.Change your bathmat and hand towel There’s nothing like a fresh and clean bathmat to trick your guests into thinking that you’ve just finished scrubbing the bathroom. Add a clean hand towel to complete the look. 5.Add a sweet scent Give your bathroom a look of freshness by popping a small vase of flowers in there. You can also try a scented candle on top of the toilet to give off a nice scent and hide any odours. Image credits: Shutterstock

Home & Garden

Vinegar and baking soda: a cleaning hack or just a bunch of fizz?

<a href="https://theconversation.com/profiles/nathan-kilah-599082">Nathan Kilah</a>, <a href="https://theconversation.com/institutions/university-of-tasmania-888">University of Tasmania</a> Vinegar and baking soda are staples in the kitchen. Many of us have combined them in childhood scientific experiments: think fizzy volcanoes and geysers. But people also frequently mix vinegar and baking soda to produce a reportedly effective household cleaner. Unfortunately, the chemistry behind the bubbly reaction doesn’t support the cleaning hype. The fizzy action is essentially <a href="https://theconversation.com/six-surprising-things-about-placebos-everyone-should-know-220829">a visual “placebo</a>”, formed by the combination of an acid and a base. So, how does it work, and is it worth using these chemicals for cleaning? To understand all this, it helps to know a little more about chemistry. <h2>What’s an acid?</h2> Foods with a sour taste typically contain acids. These include citric acid in lemon juice, malic acid in apples, lactic acid in yoghurt and <a href="https://theconversation.com/kitchen-science-everything-you-eat-is-made-of-chemicals-56583">phosphoric acids in soft drinks</a>. Most vinegars contain around 4–10% acetic acid, the rest is water and small amounts of flavour chemicals. There are other naturally occurring acids, such as formic acid in ant bites and hydrochloric acid in our stomachs. Industrially, sulfuric acid is used in mineral processing, nitric acid for <a href="https://theconversation.com/what-is-ammonium-nitrate-the-chemical-that-exploded-in-beirut-143979">fertiliser manufacturing</a> and the highly potent hydrofluoric acid is used to etch glass. All of these acids share similar properties. They can all release hydrogen ions (positively charged atoms) into water. Depending on their potency, acids can also dissolve minerals and metals through various chemical reactions. This is why vinegar is an excellent cleaner for showers or kettles – it can react with and dissolve mineral deposits like limescale. Other common acidic cleaning ingredients are oxalic acid, used for revitalising timber decks, hydrochloric acid in concrete and masonry cleaners, and sulfamic acid in potent toilet cleaners. <h2>What’s a base?</h2> In chemistry, bases – the opposite of acids in many ways – can bind, rather than release hydrogen ions. This can help lift and dissolve insoluble grime into water. Bases can also break apart fat molecules. Baking soda (also known as sodium hydrogen carbonate, sodium bicarbonate, or bicarb) is a relatively weak base. Stronger common bases include sodium carbonate (washing soda), sodium hydroxide (lye) and ammonia. <a href="https://theconversation.com/spill-at-a-nuclear-facility-shows-potential-burn-risks-from-a-household-chemical-112763">Sodium hydroxide</a> is a potent drain cleaner – its strong base properties can dissolve fats and hair. This allows blockages to be broken down and easily flushed away. <h2>Mixing a base and an acid</h2> Mixing vinegar and baking soda causes an immediate chemical reaction. This reaction forms water, sodium acetate (a salt) and carbon dioxide – the fizzy part. The amount of carbon dioxide gas that is produced from baking soda is remarkable – one tablespoon (around 18 grams) can release over <a href="https://www.chemedx.org/JCESoft/jcesoftSubscriber/CCA/CCA8/MAIN/8/06/2/4/movie.html">five litres of gas</a>! But only if you add enough acid. Reactions in chemistry often use equal quantities of chemical reagents. A perfect balance of acetic acid and baking soda would give you just water, carbon dioxide and sodium acetate. But the majority of vinegar and bicarb cleaner recipes use a large excess of one or the other components. An example from TikTok for a DIY oven cleaner calls for one and a half cups of baking soda and one quarter cup of vinegar. Crunching the numbers behind the chemical reaction shows that after the fizz subsides, over 99% of the added baking soda remains. So the active cleaning agent here is actually the baking soda (and the “elbow grease” of scrubbing). Ovens can be cleaned much more rigorously with stronger, sodium hydroxide based cleaners (although these are also more caustic). Many modern ovens also have a self-cleaning feature, so read your product manual before reaching for a chemical cleaner of any sort. <h2>What about the sodium acetate?</h2> Devotees of vinegar and baking soda mixtures might be wondering if the product of the fizzy reaction, sodium acetate, is the undercover cleaning agent. Unfortunately, sodium acetate is an even weaker base than baking soda, so it doesn’t do much to clean the surface you’re trying to scrub. Sodium acetate is used in <a href="https://www.youtube.com/watch?v=vABpel-11Nc">crystallisation-based heating packs</a> and as a concrete sealant, but not typically as a cleaner. Fun fact: sodium acetate can be combined with acetic acid to make a crystalline <a href="https://theconversation.com/busting-the-myth-that-all-food-additives-are-bad-a-quick-guide-for-label-readers-82883">food additive</a> called sodium diacetate. These crystals give the vinegar flavour to <a href="https://www.youtube.com/watch?v=N0hEutu_goY">salt and vinegar chips</a> without making them soggy. <h2>Sorry to burst your bubbles</h2> There are a few rare cases where mixing vinegar and baking soda may be useful for cleaning. This is where the bubbling has a mechanical effect, such as in a blocked drain. But in most cases you’ll want to use either vinegar or baking soda by itself, depending on what you’re trying to clean. It will be less <a href="https://theconversation.com/visually-striking-science-experiments-at-school-can-be-fun-inspiring-and-safe-banning-is-not-the-answer-195362">visually exciting</a>, but it should get the job done. Lastly, remember that mixing cleaning chemicals at home can be risky. Always carefully read the product label and directions before engaging in DIY concoctions. And, to be extra sure, you can find out more safety information by reading the product’s <a href="https://theconversation.com/a-new-tiktok-trend-has-people-drinking-toxic-borax-an-expert-explains-the-risks-and-how-to-read-product-labels-210278">safety data sheet</a>.<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/225177/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/nathan-kilah-599082">Nathan Kilah</a>, Senior Lecturer in Chemistry, <a href="https://theconversation.com/institutions/university-of-tasmania-888">University of Tasmania</a> Image credits: Shutterstock 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/vinegar-and-baking-soda-a-cleaning-hack-or-just-a-bunch-of-fizz-225177">original article</a>.

Home & Garden

"I was angry": Julia Morris comes clean about Dr Chris Brown's departure

We are all well aware that Dr Chris Brown, beloved former co-host of the jungle rollercoaster known as I’m A Celebrity… Get Me Out Of Here!, bid farewell to the show last year. Host Julia Morris, renowned for her vivacious wit and boundless charm, recently shed some light on her inner turmoil when her long-time partner in jungle antics decided to hop over to rival network Seven. The departure of Chris, after nine glorious seasons of quips and critters, left Julia in a state of bewilderment. "I was shocked," Morris <a href="https://au.lifestyle.yahoo.com/julia-morris-admits-she-was-angry-when-chris-brown-quit-im-a-celebrity-004322904.html" target="_blank" rel="noopener">told Yahoo! News</a>. "I was angry, but I was also fine because it's what my friend needed to do. It was a super confusing time." Morris then faced the daunting prospect of finding a new partner-in-crime; enter Robert Irwin, the youthful wildlife enthusiast and heir to the Crocodile Hunter legacy. After a rigorous audition process involving around six Aussie personalities, Robert emerged as the chosen one. Julia described the moment as if the clouds parted, and a celestial spotlight shone down on young Irwin. "Everybody dissolved immediately and everybody knew it," Julia recounted. Now, the burning question on everyone's minds: Will Julia be just as flirtatious with the sprightly 20-year-old Irwin as she was with Chris? On that matter, Julia has remained coy: "I don't know how and why it's already working so beautifully." she teased. Julia also reassures us that she and Robert have already formed a bond akin to that of two koalas clinging to the same eucalyptus tree. "Now we have fun. I'm learning along the way from Robert, which is fantastic," she gushed. And thus, a new era dawns in the jungle, where critters roam, celebrities squirm and Julia Morris reigns supreme as the queen of quips and camaraderie. Image: Network 10

Amid allegations of price gouging, it’s time for big supermarkets to come clean on how they price their products

<a href="https://theconversation.com/profiles/sanjoy-paul-1141384">Sanjoy Paul</a>, <a href="https://theconversation.com/institutions/university-of-technology-sydney-936">University of Technology Sydney</a> With inflation driving up the cost of living, many are dreading not just the hassle of a big grocery shop, but also the bruising cost. But while Australians struggle with their budget and spending, several major supermarkets made large profits in 2022–23. Coles and Woolworths, for example, made net profits of <a href="https://www.theguardian.com/business/2023/aug/23/woolworths-posts-162bn-profit-with-dramatic-lift-in-margins-despite-cost-of-living-crisis">A$1.1 billion and A$1.62 billion</a>, respectively. <a href="https://www.news.com.au/finance/money/costs/coles-and-woolworths-chief-executives-to-face-senate-inquiry-into-supermarket-price-hikes/news-story/0f74b6d4cac20ee65b818642f4f554ba">Allegations of price gouging</a> by Australian supermarkets have even led to a <a href="https://www.abc.net.au/news/2023-12-03/greens-move-to-establish-senate-inquiry-into-supermarkets/103179656">Senate inquiry</a> into supermarket pricing. Coles chief executive Leah Weckert has <a href="https://www.colesgroup.com.au/media-releases/?page=coles-group-statement-on-senate-inquiry-into-supermarket-prices">promised</a> to appear at the inquiry, saying the company “works hard to keep prices affordable for Australian households […]” and is ready to “engage in an informed discussion on the factors that influence supermarket pricing.” Woolworths Group chief executive Brad Banducci, meanwhile, <a href="https://www.woolworthsgroup.com.au/au/en/media/latest-news/2023/woolworths-group-confirms-ceo-will-appear-at-senate-inquiry-on-s.html">said</a> he welcomes the chance to explain to the Senate “how we are working to balance the needs of our customers, our team and our suppliers in the context of economy-wide inflationary pressure”. But why wait until a Senate inquiry to explain all that? There’s an opportunity now for the big supermarkets to be more transparent about how they decide what prices to put on products. <h2>Allegations of price gouging</h2> It’s not just <a href="https://www.abc.net.au/news/2023-12-03/greens-move-to-establish-senate-inquiry-into-supermarkets/103179656">politicians</a> and <a href="https://au.finance.yahoo.com/news/woolworths-photo-exposes-everything-wrong-with-supermarkets-002726485.html">customers</a> complaining about supermarket prices. Australian farmers have also accused Coles and Woolworths of price gouging for <a href="https://www.news.com.au/finance/business/retail/aussie-farmer-shipping-beautiful-melons-to-japan-rather-than-deal-with-coles-and-woolworths/news-story/bd685cd91f934f31c02c764097f496ae">fruits and vegetables</a>, claiming supermarkets profit too much from their crops. The National Farmers’ Federation has <a href="https://www.freshplaza.com/oceania/article/9583132/farmers-call-for-price-transparency-beyond-supermarket-inquiry/">called</a> for greater transparency from the supermarkets on how they decide prices. A recent <a href="https://www.freshplaza.com/oceania/article/9583132/farmers-call-for-price-transparency-beyond-supermarket-inquiry/">survey</a> by AUSVEG (the peak industry body for the Australian vegetable and potato industries) found 34% of vegetable growers are considering leaving the industry in the next 12 months as they <a href="https://www.news.com.au/finance/business/retail/aussie-farmer-shipping-beautiful-melons-to-japan-rather-than-deal-with-coles-and-woolworths/news-story/bd685cd91f934f31c02c764097f496ae">struggle</a> to turn a profit. When asked about calls for more transparent pricing, a Woolworths spokesperson told The Conversation: <blockquote> We publish both our average gross margin and EBIT (earnings before interest and taxes) margin transparently in our public financial reports. Supply chain costs are different for every product and they are constantly fluctuating, as are our buying costs in the case of fresh food like fruit and vegetables. Shoppers are very savvy. We operate in a highly competitive industry and we know our customers will – and do – shop around to find the best value. As we start to see the rate of inflation ease, we will continue to focus on delivering savings to our customers. </blockquote> Coles was also contacted for comment but did not reply before publication deadline. <h2>Factoring in many costs</h2> When a retailer buys products from their suppliers, it involves a supply chain that includes supply, manufacturing, transportation and distribution, warehouse and storage. There are several costs – such as product costs, transportation fees, labour, rent, inventory and more – involved at every step of the process. The supermarket must factor in all costs, as well as its profit margin, when it sets the selling price for a product. Organisations usually have these cost breakdowns as part of their internal decision-making – but they don’t typically disclose these calculations to their customers. <h2>Not disclosing the cost breakdowns</h2> The problem for supermarkets is that when they don’t disclose details such as their buying price or supply chain costs, it can contribute to anger among customers and suppliers. Apple and Pear Australia Limited – the national peak industry body for apple and pear growers – has <a href="https://apal.org.au/retailers-need-to-demonstrate-greater-price-transparency/">called for</a> retailers to demonstrate greater price transparency, saying, “frustration at the behaviour of the major retailers has again angered many growers”. Of course, supermarkets use several pricing strategies to win customer support – such as locking in prices for a certain period of time, everyday low prices on key products, specials, price-matching and discounts. Supermarkets spend millions of dollars on these price-related advertisements, but perhaps they would get more community support by simply disclosing cost breakdowns on their websites and in-store to show their commitment to transparent and fair pricing. <h2>Transparent and fair pricing</h2> Research shows price transparency helps businesses build trust with their <a href="https://fastercapital.com/content/The-Importance-of-Price-Transparency-in-Pricing-Psychology.html">customers</a>. Many major retailers already have this information for internal decision-making, so could display this online and in stores. Yes, prices change constantly due to factors outside their control – such as fuel prices, shipping problems or even supply chain issues linked to global conflict. But being more open with customers about these issues could help repair relationships and their public image. Perhaps there may even be a role for government, which could collaborate with supermarkets and retailers to develop policies for transparent and fair pricing. Everyday Australians deserve to be treated fairly and given the information they need about how major supermarkets price their products, so they can make informed decisions at the checkout.<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/219316/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/sanjoy-paul-1141384">Sanjoy Paul</a>, Associate Professor, UTS Business School, <a href="https://theconversation.com/institutions/university-of-technology-sydney-936">University of Technology Sydney</a> Image credits: Getty Images 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/amid-allegations-of-price-gouging-its-time-for-big-supermarkets-to-come-clean-on-how-they-price-their-products-219316">original article</a>.

Money & Banking

Aussie actresses clean up at the Golden Globes

Awards season has officially kicked off in Hollywood, with A-listers flocking to the Los Angeles Beverly Hilton Hotel on Monday for the 81st annual Golden Globes. With the very best of the best in the entertainment industry nominated for the best film and television moments of 2023, some of our own Aussie talent walked away with some of the biggest awards of the night. Aussie actress Elizabeth Debicki emerged as an early winner for the TV categories, taking home the award for Best Supporting Actress for her portrayal of Princess Diana in The Crown. She beat out the likes of Meryl Streep (for her role in Only Murders in the Building) and Hannah Waddingham (for her role in Ted Lasso) for the award, as she has long been praised by royal fans for her touching portrayal of the late Princess of Wales' last years. Also coming out on top in another television category was Aussie actress Sarah Snook, who was the recipient of one of the biggest honours of the night, Best Actress in a drama, for her incredible performance in the final season of Succession. Meanwhile for outstanding achievements in film, Margot Robbie and the whole Barbie team took home the inaugural Cinematic and Box Office Achievement award, following the global hype of Barbie mania back in July. Margot was also nominated for Best Actress in a musical or comedy for Barbie, but was ultimately pipped by Emma Stone for her incredible performance in Poor Things. Elsewhere in the awards, Oppenheimer came out on top with Cillian Murphy taking home the award for Best Actor for portraying scientist J. Robert Oppenheimer in the three-hour long epic, with the film also being crowned Best Picture and Christopher Nolan taking home the Best Director award. Image credits: Getty Images

Harry Connick Jnr finally comes clean on feud with Kyle

Kyle Sandilands and Harry Connick Jr. have hashed out their rumoured ongoing feud, calling a truce live on air. The radio shock jock welcomed the singer on The Kyle and Jackie O Show on Wednesday morning to discuss his upcoming Australian tour, when Sandilands brought up their long-running beef. “You know what I admire about Harry, and I’ve watched Harry too,” he told co-host Jackie O when Connick Jr. was on the line. “When you think some doesn't like you, you watch them, you, over-analyse them and you start getting in your head, ‘I wonder why he doesn’t like me?’” Kyle then discussed some lessons he had learned from Harry during their time on Australian Idol together, “What I do know about Harry, and he told the Idol contestants this last year, is read the room. You’ve got to perform to whoever is there, whether it’s an auditorium or it’s to three people on a TV show.” Rather than welcoming the compliment, Connick Jr. thought Sandilands was being sarcastic and "tricky" by stirring the pot. “I see how tricky you are, slipping in there that I don’t like you,” the star said on air. “I don’t know where you got that from. I do like you very much and I really enjoyed our time together. So I see you trying to flip that in there, but you’re not gonna get that past me, pal.” Henderson said Sandilands may have been “paranoid”, while he agreed he “misread” the situation. “So this whole time, I should’ve maybe asked,” he told Connick Jr, who replied: “I love my wife and kids, and I’ve been very lucky in may career. Life is too short for any kind of … I just love life. So when you say I don’t like you, I’m not sure where that comes from, but for the record, I do like you very much and so everything is cool from my end.” While he accepted the explanation, Sandilands also remained slightly sceptical because Connick Jr “is a very good actor” after all, he said. “But Kyle the thing about actors is we don’t lie – we tell the truth,” replied Connick Jr. “You gotta tell the truth in the scene because, if you’re lying, you’re not being true to your character.” Sandilands then urged listeners to forget “everything I’ve ever said about Harry”. Image credits: KIIS FM / Getty Images

9 tricky ways to clean your house while you sleep

1. Soak a showerhead Mineral deposits can clog a showerhead and affect its pressure over time. To clean, fill a plastic bag with vinegar. Place the bag around the showerhead, submerging it in the liquid. Secure the bag to the neck of the showerhead with a twist tie and leave overnight. The vinegar will break down the buildup by morning. 2. Remove stains on pots and pans If a batch of cookies left your baking sheet gunky, let a dryer sheet clean it overnight. Place the sheet on the pan and fill with warm water. Cleaning agents in the dryer sheet will help loosen stuck-on grime and stains. In the morning, easily wipe off with a sponge. 3. Polish stove grates Cleaning greasy, food-splattered stove burners can be a tiresome chore. Before you go to bed, seal each burner in a large plastic bag with ¼ cup of ammonia. The overnight soak will make it easy to wipe off the surface with a sponge the following day. 4. Banish rust on tools If your rusty tools have seen better days, fill a tray with Coca-Cola. Submerge the tools, allow to soak overnight, and scrub clean with a stiff brush in the morning. The soda’s phosphoric acid will help loosen the gunk. 5. Eliminate wet messes If your sofa or carpet became the victim of an icky, wet mess (say, vomit or urine), mix a paste of baking soda and water to soak it up. Use a spoon to spread the paste over the soiled area. Allow to dry overnight, then vacuum in the morning. 6. Descale a kettle Limescale can build up from calcium carbonate deposits in water, leading to an off-white, chalky deposit in your kettle. To clean, cut a lemon into large slices, place in the kettle, and add water. Bring to a boil, then take the kettle off the heat and leave overnight. The lemon’s citric acid will loosen the limescale. Toss the fruit and water mixture in the morning and rinse before using your newly cleaned kettle. 7. Clean bath toys To make grubby rubber duckies, boats, and other bath toys new again, mix one gallon warm water with ¾ cup vinegar. Soak the toys overnight. Rinse thoroughly and allow to air dry. 8. Make diamonds sparkle Quickly polish a diamond ring by filling a bottle cap with Windex. Soak the ring overnight and dry with a soft cloth in the morning to remove grime and add shine. 9. Remove red wine stains If red wine marked up your favorite garment, sprinkle the stain with salt and cover with club soda. The salt absorbs the stain while the club soda’s carbonation and sodium helps lift it. Leave overnight before laundering. Image credits: Getty Images This article originally appeared on <a href="https://www.readersdigest.com.au/diy-tips/9-ways-clean-house-your-sleep" target="_blank" rel="noopener">Reader's Digest</a>.

Home & Garden

Calories and kilojoules: how do we know the energy content of food, and how accurate are the labels?

<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>; <a href="https://theconversation.com/profiles/emily-burch-438717">Emily Burch</a>, <a href="https://theconversation.com/institutions/southern-cross-university-1160">Southern Cross University</a>, and <a href="https://theconversation.com/profiles/katelyn-barnes-1238606">Katelyn Barnes</a>, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a> Everything we consume contains energy our bodies use to move, grow and maintain health. To work out how much energy is in different foods and drinks, we need to first look at a few core concepts. Firstly, you’ve probably heard of the units of measurement for energy – calories – as well as the metric equivalent, which is joules. One calorie is defined as the amount of energy required to raise the temperature of 1 gram of water by 1℃. In human nutrition, the amounts of energy needed to maintain health, and to fuel a body, are much larger than the tiny singular calories used to heat up a gram of water. So, the term “calorie” in nutrition commonly refers to a <a href="https://www.sciencedirect.com/science/article/pii/S0022316622085546">kilocalorie</a> (or kcal), which is 1,000 calories. When you see the word “calories” on a nutrition label, it’s likely referring to kcals. The energy stored in food and drinks is released when the body breaks down one or more of the four macronutrients inside the food (carbohydrates, proteins, fats, alcohol). The body then uses that energy for activities such as keeping our heart beating, our lungs breathing and our muscles moving. When energy in food is estimated, it is the amount of energy food and drinks provide for these bodily processes. The four macronutrients provide <a href="https://www.sciencedirect.com/science/article/pii/S0002916522039454">different amounts of energy</a>: <ol> <li>1 gram of carbohydrate provides about 4 kcal of energy</li> <li>1 gram of fat provides about 9 kcal of energy</li> <li>1 gram of protein provides about 4 kcal of energy</li> <li>1 gram of alcohol provides about 7 kcal of energy.</li> </ol> <h2>How are calories estimated?</h2> There are two ways to estimate the amount of energy in food and drinks. The first is called “bomb calorimetry”. This gold-standard method involves placing a small sample of food or drink inside a device known as a bomb calorimeter. The food is burned in the presence of oxygen, releasing heat. The amount of heat released is directly related to the amount of energy in the food, allowing a calculation to be made. This method is most commonly used for foods rich in fats and is considered the most reliable (but expensive) method. The second method, the Atwater system, is a much less expensive method for estimating energy content. It is more commonly used when calculating energy of most food and drinks sold in supermarkets. Named after legendary food researcher <a href="https://www.sciencedirect.com/science/article/pii/S0022316622065336">Wilbur Atwater</a>, this system uses a standard conversion factor for each macronutrient found in food and drinks. By estimating the amount of each of the four macronutrients, an approximate calculation of the total energy can be made. However, this method requires detailed knowledge of the ingredients within composite foods (such as muesli bars or hamburgers) – which may reduce accuracy. There is also a margin of error to expect with the Atwater system, because it assumes each ingredient is always the same in composition. For example, a cup of oats grown in one part of the country won’t necessarily have the exact same nutritional content as another cup of oats grown elsewhere, due to climate and soil differences. So, this system is an estimation based on an average. Importantly, both methods estimate the amount of energy in food and drinks. But the actual energy our bodies extract from these foods and drinks can vary due to factors such as individual differences in digestion and absorption, as well as food processing and cooking methods. <h2>Why do foods have calories written on them?</h2> In Australia, it’s a <a href="https://www.foodstandards.gov.au/consumer/labelling/panels/Pages/default.aspx">legal requirement</a> for packaged food items to have a nutrition information panel that displays the number of kcal it contains. However, homemade food items sold at places like a fresh market may not be required to provide a nutrition information panel. This will depend on the type of food being sold and the scale of the business operation. Fresh foods such as fruit, vegetables and meat also don’t require a nutrition information panel. To find out the number of kcal in them, you can either run an experiment with a bomb calorimeter or look up an estimated value in an online nutrition database. Food composition databases such as <a href="https://www.calorieking.com/us/en/">CalorieKing</a> compile information about the energy and nutrient content of various foods. Dietitians and other health professionals often use these databases to estimate the energy content of foods to inform dietary recommendations. <h2>Different international standards</h2> Both kJ and kcal refer to energy – they are just two different units of measurements (such as how inches and centimetres are two different units for measuring length). Kilojoules (kJ) is part of the International System of Units (SI). Australia, New Zealand and some parts of Europe use kJ. The United States and the United Kingdom use kcal. To convert between calories and kilojoules you use the conversion factors: <ul> <li>1 kcal = 4.184 kJ</li> <li>1 kJ = 0.24 kcal (about ¼).</li> </ul> For example, if you have a packet of chips with an energy content of 200 kcal, you can convert it to kJ as follows: 200 kcal × 4.184 = 836.8 kJ. As for how many calories are acceptable to eat, the Australian Guidelines for Healthy Eating estimate the average adult requires about 7,000kJ or 1,670Kcal every day. However, differences in age, gender, size, health and physical activity will influence how much energy a person needs. To estimate your personal energy requirements, you can use this <a href="https://www.eatforhealth.gov.au/nutrient-reference-values/nutrients-dietary-energy-calculator#results-energy">nutrients and dietary energy calculator</a>.<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/211613/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <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>; <a href="https://theconversation.com/profiles/emily-burch-438717">Emily Burch</a>, Dietitian, Researcher & Lecturer, <a href="https://theconversation.com/institutions/southern-cross-university-1160">Southern Cross University</a>, and <a href="https://theconversation.com/profiles/katelyn-barnes-1238606">Katelyn Barnes</a>, Postdoctoral Research Fellow, School of Human Movement and Nutrition Sciences, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a> Image credits: Getty Images 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/calories-and-kilojoules-how-do-we-know-the-energy-content-of-food-and-how-accurate-are-the-labels-211613">original article</a>.

Food & Wine

Outrage after renters confronted with cleaning “scoring system”

An Australian real estate agent has come under fire for their “demoralising” scoring system for tenants during routine inspections. One fired up renter said they were shocked to receive a scorecard from the agent after they complied with an inspection, and shared their feedback on Reddit. The scorecard rated the tenant’s efforts cleaning the property in 17 different rooms and areas, marking them on cleanliness, and if the areas were damaged or required maintenance. The renter was then also given an overall rating out of five stars, based on the upkeep of their rental home. The Reddit user showed that they received just three and half stars, despite being marked down in only one area due to a light globe not working. In their post, the tenant said they had made every effort to clean the home, adding that the rating was “demoralising”. “I’ve been renting a long time, and my deep cleaning routine is based around inspections,” they explained. “I go all out - every room in my little 3x2 villa is given a spring clean, every surface is washed including walls, doors, lights, windows, carpets etc.” “Had my latest inspection a few weeks ago and just received the report. Despite the agent commenting once again that she never sees houses as clean as mine, and taking 112 (!) photos of every single thing that shows how great the condition of the house is - having one light globe not working is so terrible that I’m scored three and a half out of five.” The renter went on to say that they had only recently discovered that the broken light globe was the real estate’s responsibility to replace, and does not warrant such a severe marking down in their “score”. “The globe in question is a downlight fitting. We have so many downlights that I don’t even use this particular one,” they continued. “I can’t replace the globe itself, I need to get into the roof to replace the whole unit. Thanks to people here I’ve learned this isn’t even my responsibility to fix!” The renter’s post sparked a huge outrage online, with many up in arms over the current state of the rental market and unrealistic expectations of estate agents. One person said, “I fully believe that the average renter keeps a home to a higher standard than an owner, and it seems deliberately demoralising that someone could be marked down for having a light out.” Another added, “This is ridiculously petty, and more importantly, totally irrelevant to the purpose of a periodic inspection. Which is to identify whether any maintenance is needed.” A third person took their anger out on the entire system, summing it up by writing, “I sort of wonder what little lightbulb clicks in your mind and you wake up one day and ask yourself, ‘How can I be a massive c*** who offers no value to society? I know! I will get into real estate.’” Image credits: Getty Images / Reddit

Real Estate

How to clean these bathroom items that get overlooked

Cleaning the bathroom will not only make your house feel nicer for but it is important for your hygiene as so many bathroom items are used on a daily basis. Even if your bathtub, shower, tiles and sink is clean, these bathroom items deserve your frequent attention. 1. Toothbrush and toothbrush holder For obvious reasons keeping your toothbrush and toothbrush holder clean is vital to your mouth health. To keep your toothbrush clean, make sure you rinse it well after each use to avoid a build-up of toothpaste. Frequently you should do a deep clean of your toothbrush and this can be done by leaving it in a cup of vinegar for 30 minutes. The vinegar will remove the build of bacteria on your toothbrush. Remember to replace your toothbrush every 3-4 months and then you can use your old one for cleaning. A toothbrush holder can be cleaned thoroughly by putting it in the dishwasher or you can rinse it out in hot water and dish soap to remove the build-up of gunk. 2. Loofah Loofahs do a great of cleaning bodies but it is important to remember to clean them as well. Your loofah can be cleaned by submerging in a 50/50 mixture of hot water and vinegar for an hour. Then leave it to dry. This method can also be used on sponges or wash cloths. 3. Razors It is important to clean your razor as a wet razor can become rusty and a moist blade can cause ingrown hairs and irritation when shaving. To keep your razor in top condition, put some rubbing alcohol on a cotton pad and swipe across your razor. Dry your razor with a towel once you are done and store your razor in a dry place in your bathroom. 4. Toilet brush To give your toilet brush a thorough clean, rest the brush between the toilet bowl and seat after cleaning the toilet. Spray the brush with a disinfectant and then let it sit as it drips for ten minutes or so. Then rinse the brush in very hot water and allow it to drip dry again. The brush holder should also be cleaned with disinfectant and then leaving it for ten minutes and rinsing with hot water. 5. Plunger After each use of the plunger, spray it with a disinfectant and leave for ten minutes and then let it air dry. It is helpful to store your plunger with a plastic bag so that way, after you use it you can put in the bag and then take it somewhere to clean to avoid any dripping. Don’t re-use the plastic bag. Image: Getty

Home Hints & Tips

A list of the germiest items in your home (and how to fix them)

Even when you think your house is clean, bacteria can be lurking in everyday items around the house. Check out our guide for finding the trouble spots and getting rid of them. The culprit: Kitchen sponge It’s scary to think that the item that we use to clean our dishes and benches can be harbouring some serious nasties. Think E. coli and Staphylococcus, mould, and even the influenza virus. The cure: Each time you use your sponge, rinse it out in hot water, wring and allow to air dry. Once a day, sterilise it by wetting it and placing in the microwave for 60 seconds. Change your sponge every 2 weeks to keep the germs at bay. The culprit: Kitchen sink Did you know that your sink is most likely dirtier than your toilet seat? Any fruits, vegetables, cutlery and chopping boards that may have come into contact with raw meat are potentially contaminating your sink. The cure: Three times per week, dampen the sink and spray with surface spray. Scrub the sink to remove any bacteria, especially around the drain where nasties can lurk. Use an antibacterial product to then spray the taps, sink, draining board and your scrubbing brush. Leave for ten minutes before rinsing. The culprit: Toothbrushes Each day germs move from your mouth to your toothbrush, and are then left next to any other family member’s toothbrushes to mingle and spread. Your toothbrushes are also often kept near the toilet and are possibly being contaminated with airborne bacteria from every flush. The cure: Keep your toothbrushes in an upright container (not resting on the sink) so that they can have air circulating around them. Try to reduce the germs moving from the toilet to your brush by always closing the toilet lid before flushing. If you are ill, replace your toothbrush, and treat yourself to a new brush every three months. The culprit: Electronics We touch the remote, our computers and our phones all day long – but how often do we clean them? Rarely, if ever, is the common answer. And the scary part is they can be as filthy as your kitchen sponge. The cure: Use a disinfecting wipe to go over your (switched off) electronics. Think laptops, mobile phones, and remote controls. The culprit: Bath towels We often “dry” our towels on the back of the door in a damp bathroom where they never get completely dried properly. This can cause mould, mildew and bacteria to thrive, making it possible to get a nasty rash or infection. The cure: Allow your towels to spread out and air dry. Instead of a hook it’s best to use a rack where they can be completely spread out. Change your towels every 3-4 days as this will help keep the levels of bacteria down. If your towels still smell after washing, it’s time to toss them out. Image credit: Shutterstock Related links: <a href="../lifestyle/at-home/2015/01/dirty-home-items/">5 surprisingly dirty things in your house</a> <a href="../lifestyle/at-home/2014/12/home-cleaning-tips/">10 amazing cleaning tips everyone should know</a> <a href="../lifestyle/at-home/2014/10/how-to-homemade-laundry-powder-and-softener/">How to make homemade laundry powder</a>

Home Hints & Tips

Energy bill relief to benefit just one Aussie demographic

Nearly half a million older Australians will receive hundreds of dollars in energy bill relief as the federal government looks to battle rising power prices. Social Services Minister Amanda Rishworth revealed that all Commonwealth seniors health card holders will be given up to $500 per household. The 490,000-plus recipients will include an extra 16,320 people granted access to the card after the federal government introduced higher income thresholds for eligibility in November 2022. The new income limits are $90,000 for singles and $144,000 (combined) for couples. The government claimed this would benefit 52,000 older people by 2026-27. Rishworth explained the energy relief would be available from July 2023. The Australian Energy Regulator (AER) released its final determination on May 25, with a revised price increase higher than the March draft that saw a 20 to 22 per cent rise. AER chair Clare Savage said it had been a “difficult decision” but high wholesale energy costs continued to hike up retail prices. “No one wants to see rising prices, and we recognise this is a difficult time, that’s why it’s important for consumers to shop around for a better deal,” she said. Following the AER’s announcement, Opposition Leader Peter Dutton appeared on Today and said Prime Minister Anthony Albanese had “lied” to Australians about energy prices. “Let’s be very clear about it, he promised on 97 occasions your bill would go down by $275,” he told Today host Karl Stefanovic. “I think the government’s completely underestimating how much families and small businesses are hurting at the moment.” The bill comes shortly after the Australian Energy Regulator revealed electric prices were set to increase by 25 per cent for about 600,000 customers across three states from July 1. The federal government’s latest budget committed to $3 billion in financial support for those struggling to pay their power bill. Image credit: Shutterstock

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