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Fresh medical report sheds new light on Shane Warne’s sudden death

New details have emerged regarding the sudden death of cricketing legend Shane Warne, who passed away in a Thai hotel room in March 2022 at the age of 52. A newly surfaced medical report, published by The Sun, reveals that multiple medications were found in Warne’s luxury villa on the Thai island of Koh Samui. These included two types of Viagra – Sildenafil (marketed as Viagra) and Kamagra (an unregulated version available in jelly sachets) – as well as Dapoxetine, a drug used to prevent premature ejaculation. While Viagra and Dapoxetine are legal with a prescription, Kamagra is illegal in Thailand but widely available over the counter. It remains uncertain whether Warne had taken any of these medications before his passing. Warne had a known history of heart issues, and these medications carry warnings for individuals with cardiovascular conditions. However, a post-mortem examination conducted in Thailand concluded that Warne died of natural causes due to congenital heart disease, ruling out foul play. Despite this, recent reports claim that Thai police removed Kamagra from Warne’s hotel room during their investigation. Meanwhile, News Corp reported that Warne had openly discussed using Viagra during his relationship with actress and model Elizabeth Hurley. Warne was staying at the Smujana Villas resort with three friends at the time of his death. CCTV footage captured two massage therapists leaving his villa shortly before he was found unresponsive at approximately 5pm His friends called for medical assistance at 5:40pm, with paramedics arriving at 6pm and initiating CPR at 6:10pm. Dr Dulyakit Wittayachanyapong, who oversaw Warne’s treatment at Thailand International Hospital, described his condition upon arrival, stating: “When he arrived at hospital, his face was green and pale, he had black blood in his nose and mouth, which was unusual. There was no sign of life.” Hospital staff attempted resuscitation for 43 minutes before Warne was declared dead at 6:53pm. According to the medical report, doctors intubated him and administered adrenaline and sodium bicarbonate in an attempt to revive him. Blood tests revealed that his oxygen levels had plummeted to a critical 40%. In the weeks leading up to his death, Warne had been on a liquid diet, and his lifestyle reportedly included habitual smoking and drinking. His sudden passing sent shockwaves through the cricketing world, with fans and former teammates mourning the loss of an icon whose impact on the sport remains unmatched. Images: Instagram

Caring

Drivers warned of new fines ahead of major change to speeding cameras

Transport officials in New South Wales are set to expand the use of average speed cameras beyond heavy vehicles to include all motorists. This initiative, which will take effect on May 1, is aimed at curbing the rising number of road fatalities across the state. Currently, average speed cameras, also known as point-to-point cameras, are used to only monitor heavy vehicles. However, cameras along two major highways – a 15km stretch of the Pacific Highway between Kew and Lake Innes, and the Hume Highway between Coolac and Gundagai – will soon track the speeds of all vehicles, according to Transport for NSW. These locations have been identified as high-risk crash zones. The implementation follows a steady rise in road fatalities across Australia in recent years, prompting authorities to take stronger measures against speeding. Unlike traditional speed cameras that capture speed at a single point, average speed cameras measure a vehicle's speed over a set distance. By recording the time a vehicle passes through two fixed points, authorities can determine whether the vehicle exceeded the legal speed limit along that stretch. This method discourages drivers from merely slowing down for fixed cameras before speeding up again. NSW imposes significant penalties for speeding, with fines varying based on the severity of the offence. Light vehicle drivers caught exceeding the speed limit by more than 45 km/h face a maximum fine of $3,300, while heavy vehicle drivers can be fined up to $5,500. Additionally, offenders risk a minimum six-month licence disqualification. To ease the transition, the new enforcement system will undergo a two-month trial period. From May 1 to June 30, motorists caught exceeding speed limits in the designated areas will receive warning letters rather than fines. However, starting July 1, full penalties, including fines and demerit points, will apply. Dr Ingrid Johnston, CEO of the Australasian College of Road Safety (ACRS) spoke recently about the need for more urgent measures to minimise road trauma. She has advocated for broader road safety initiatives, including speed cameras and reduced speed limits in areas with high pedestrian and cyclist activity. NSW Minister for Roads, John Graham, also reinforced the importance of the initiative, citing global studies that show average speed cameras significantly reduce road injuries and fatalities. "We know that speed remains our biggest killer on the road, contributing to 41 per cent of all fatalities over the past decade," he stated. The government aims to ensure motorists are well-informed about the changes. All affected locations will feature warning signs, and a community awareness campaign will support the transition. Image: Shutterstock

Money & Banking

Aussie drivers warned over little-known "speed fine trap"

Road authorities are warning drivers of a "speed fine trap" in the lead-up to school's return. In NSW, four back-to-back pupil free days will take place from February 1 until February 5, as teachers and staff prep for the new school year, with students set to return on the 6th. While there will be no kids on campus, school zones will be in operation on those days, with speed limits being enforced. "Pupil-free days continue to be a major speed trap for motorists," NRMA spokesperson Peter Khoury said. Last year, 2,184 fines for speeding were issued to drivers in just two days prior to term one. An average of 1,092 fines were issued between January 30 and 31 in 2024, which was almost double the daily average for February (598). Khoury added that motorists are at risk of being fined at almost twice the rate during pupil-free days, as most drivers are "oblivious" to the rule. "It is extremely frustrating when drivers who normally abide by the 40 km/h speed limit in school zones are fined on pupil-free days because they were oblivious to the fact that the speed limits applied despite their children not being at school," he said. "The overwhelming majority of drivers go to great lengths to do the right thing around school zones and school zone speed limits have overwhelming public support — we just don’t want people inadvertently breaking the law and getting fined." He added: "Please be extra alert tomorrow as you drive through school zones as speed limits will apply." The number of pupil free days will increase from six days in 2024 to eight days in 2025. This includes the four pupil-free days on January 31 and February 3, 4 and 5. Image: Shutterstock

Legal

What are plyometric exercises? How all that hopping and jumping builds strength, speed and power

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/justin-keogh-129041">Justin Keogh</a>, <a href="https://theconversation.com/institutions/bond-university-863">Bond University</a> and <a href="https://theconversation.com/profiles/mandy-hagstrom-1180806">Mandy Hagstrom</a>, <a href="https://theconversation.com/institutions/unsw-sydney-1414">UNSW Sydney</a> If you’ve ever seen people at the gym or the park jumping, hopping or hurling weighted balls to the ground, chances are they were doing plyometric exercises. Examples include: <ul> <li><a href="https://www.youtube.com/watch?v=DEwh2mRg3EU&t=315s">box jumps</a>, where you repeatedly leap quickly on and off a box</li> <li><a href="https://www.youtube.com/watch?v=gS4F_YrwZVs">lateral skater hops</a>, where you bound from side to side like a speeding ice skater</li> <li>rapidly throwing a heavy <a href="https://www.youtube.com/watch?v=2iGj4gdfv4E&t=175s">medicine ball against a wall</a>, or to the ground</li> <li>single leg hops, which may involve hopping on the spot or through an obstacle course</li> <li>squat jumps, where you repeatedly squat and then launch yourself into the air.</li> </ul> There are many <a href="https://us.humankinetics.com/products/training-for-speed-agility-and-quickness-3rd-edition-with-hkpropel-online-video?srsltid=AfmBOor2XNPNu3WtrytuxooFb_HmqXf6kEYwlBILhmEiMO2O1uOTIj81">more examples</a> of <a href="https://us.humankinetics.com/products/plyometrics-pdf">plyometric exercises</a>. What ties all these moves together is that they use what’s known as the “<a href="https://www.frontiersin.org/research-topics/10437/the-stretch-shortening-cycle-of-active-muscle-and-muscle-tendon-complex-what-why-and-how-it-increases-muscle-performance/magazine">stretch shortening cycle</a>”. This is where your muscles rapidly stretch and then contract. <h2>Potential benefits</h2> Research shows incorporating plyometric exercise into your routine can help you: <ul> <li><a href="https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2024.1302610/full">jump higher</a></li> <li><a href="https://pubmed.ncbi.nlm.nih.gov/22450257/">sprint faster</a></li> <li>reduce the chances of getting a serious sporting injuries such as anterior cruciate ligament <a href="https://pubmed.ncbi.nlm.nih.gov/36244964/">(ACL) tears</a></li> <li>build <a href="https://pubmed.ncbi.nlm.nih.gov/19897415/">muscle strength</a></li> <li>improve <a href="https://pubmed.ncbi.nlm.nih.gov/38305252/">bone mineral density</a> (especially when combined with <a href="https://pubmed.ncbi.nlm.nih.gov/33357834/">resistance training</a> such as weight lifting), which is particularly important for women and older people at risk of falls.</li> </ul> Studies have found plyometric exercises can help: <ul> <li><a href="https://pubmed.ncbi.nlm.nih.gov/30387072/">older people</a> who want to retain and build muscle strength, boost bone health, improve posture and reduce the risk of falls</li> <li>adolescent athletes who want to build the <a href="https://pubmed.ncbi.nlm.nih.gov/36767213/">explosive strength</a> needed to excel in sports such as athletics, tennis, soccer, basketball and football</li> <li><a href="https://pubmed.ncbi.nlm.nih.gov/27704484/">female athletes</a> who want to jump higher or change direction quickly (a useful skill in many sports)</li> <li><a href="https://pubmed.ncbi.nlm.nih.gov/33956587/">endurance runners</a> who want to boost physical fitness, run time and athletic performance.</li> </ul> And when it comes to plyometric exercises, you get out what you put in. Research has found the benefits of plyometrics are significantly greater when every jump was performed with <a href="https://pubmed.ncbi.nlm.nih.gov/30741877/">maximum effort</a>. <h2>Potential risks</h2> All exercise comes with risk (as does not doing enough exercise!) Plyometrics are high-intensity activities that require the body to absorb a lot of impact when landing on the ground or catching medicine balls. That means there is some risk of musculoskeletal injury, particularly if the combination of intensity, frequency and volume is too high. You might miss a landing and fall, land in a weird way and crunch your ankle, or get a muscle tear if you’re overdoing it. The National Strength and Conditioning Association, a US educational nonprofit that uses research to support coaches and athletes, <a href="https://www.nsca.com/store/product-detail/BOOK/2275/9781718210868">recommends</a>: <ul> <li>a maximum of one to three plyometric sessions per week</li> <li>five to ten repetitions per set and</li> <li>rest periods of one to three minutes between sets to ensure complete muscle recovery.One <a href="https://pubmed.ncbi.nlm.nih.gov/30387072/">meta-analysis</a>, where researchers looked at many studies, found plyometric training was feasible and safe, and could improve older people’s performance, function and health.</li> </ul> Overall, with appropriate programming and supervision, plyometric exercise can be a safe and effective way to boost your health and athletic performance.<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/246322/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/justin-keogh-129041">Justin Keogh</a>, Associate Dean of Research, Faculty of Health Sciences and Medicine, <a href="https://theconversation.com/institutions/bond-university-863">Bond University</a> and <a href="https://theconversation.com/profiles/mandy-hagstrom-1180806">Mandy Hagstrom</a>, Senior Lecturer, Exercise Physiology. School of Health Sciences, <a href="https://theconversation.com/institutions/unsw-sydney-1414">UNSW Sydney</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/what-are-plyometric-exercises-how-all-that-hopping-and-jumping-builds-strength-speed-and-power-246322">original article</a>. </div>

Body

There’s a link between walking speed and ageing well. Here’s how you can improve your pace

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/andres-rafales-perucha-1528635">Andrés Ráfales Perucha</a>, <a href="https://theconversation.com/institutions/universidad-san-jorge-5704">Universidad San Jorge</a> and <a href="https://theconversation.com/profiles/pablo-gargallo-aguaron-1528652">Pablo Gargallo Aguarón</a>, <a href="https://theconversation.com/institutions/universidad-san-jorge-5704">Universidad San Jorge</a> For decades, we have known that the way you walk, in particular your walking speed, is tied to your health. One study has even proposed that it be considered <a href="https://pubmed.ncbi.nlm.nih.gov/24812254/">a vital sign</a>, much like heart rate and blood pressure. <a href="https://pubmed.ncbi.nlm.nih.gov/26861693/">Various studies</a> have found a link between low walking speed in adults over 65 and a greater risk of cognitive impairment, cardiovascular disease, falls (which could lead to fractures), hospitalisation, and even an increased overall mortality rate. A higher walking speed, on the other hand, is associated with increased functional capacity, meaning a better ability to move around and do activities independently. It is also linked to <a href="https://www.thelancet.com/journals/lanhl/article/PIIS2666-7568(24)00092-8/fulltext">greater longevity</a>. But how fast should you walk? <a href="https://www.sciencedirect.com/science/article/abs/pii/S1568163714000646?dgcid=api_sd_search-api-endpoint">Studies</a> recommend a few simple tests, which principally consist of timing how long it takes a person to walk between two points at their usual pace. This <a href="https://www.physio-pedia.com/4_Metre_Walk_Test">test</a> is done over a distance of four metres. A speed of under 0.8 metres per second is associated with a greater risk of frailty. <h2>How to improve walking speed</h2> While there is slight disagreement as to the best exercise for increasing walking speed, the pattern that seems most effective is <a href="https://pubmed.ncbi.nlm.nih.gov/34409961/">multicomponent training</a>, which includes several different forms of exercise: <ol> <li> Balance exercises can help improve stability and prevent falls. Examples include walking in a straight line putting one foot in front of the other, or standing on one leg, alternating every 10-15 seconds. </li> <li> Flexibility exercises can improve mobility and reduce risk of injury. The benefits of movement in alleviating back pain are <a href="https://theconversation.com/back-pain-why-exercise-can-provide-relief-and-how-to-do-it-safely-162888">well documented</a>. </li> <li> Muscular exercises help build strength in the legs, buttocks and other body areas. These can be as straightforward as standing up and sitting down in a chair. </li> <li> Aerobic exercise improves stamina, and can include walking itself, or <a href="https://theconversation.com/seven-reasons-nordic-walking-is-better-for-you-than-the-normal-kind-187391">Nordic walking</a> (with hiking poles). </li> </ol> <h2>How much aerobic exercise do we need?</h2> The main <a href="https://www.who.int/publications/i/item/9789240014886">guides</a> on physical activity recommend that, provided they are physically and medically able, each adult should do at least 150 minutes of moderately intense aeoribic exercise per week. “Moderate” means you are not too out of breath to hold a conversation, but enough to notice an increased heart and breathing rate. There are few reasons not to do this kind of exercise, and it is beneficial for people with chronic illnesses, including cardiovascular issues, metabolic conditions, or even cancer. <h2>Muscle strength: How, and how much?</h2> Strengthening exercises have traditionally been recommended 2 to 3 times a week, with at least one set per exercise session of the main muscle groups: legs, buttocks, pectorals, back and arms. However, more recent studies suggest that doing less intense but more frequent strengthening exercises may be an effective way to <a href="https://pubmed.ncbi.nlm.nih.gov/34822137/">maintain muscle mass and strength</a>. This would mean doing them almost every day, including even small exercise “snacks” throughout the day. <h2>Use it or lose it</h2> If we don’t train them, muscle mass and strength decrease over time. This not only affects our mobility, but also increases the risk of health problems and even death. A little daily exercise can make a big difference. We therefore recommend that you try to maintain your physical condition as much as possible, both to improve your immediate health and prevent future problems. If you do not know where to start, the best option is always to consult a professional. If you have difficulties or limitations in exercising, a physiotherapist can help you to build a specialised exercise plan, or can adapt one to your needs.<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/245880/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/andres-rafales-perucha-1528635">Andrés Ráfales Perucha</a>, Fisioterapeuta y Personal Docente e Investigador de la Universidad San Jorge. Miembro del grupo de investigación UNLOC., <a href="https://theconversation.com/institutions/universidad-san-jorge-5704">Universidad San Jorge</a> and <a href="https://theconversation.com/profiles/pablo-gargallo-aguaron-1528652">Pablo Gargallo Aguarón</a>, Personal Docente e Investigador en Fisioterapia, <a href="https://theconversation.com/institutions/universidad-san-jorge-5704">Universidad San Jorge</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/theres-a-link-between-walking-speed-and-ageing-well-heres-how-you-can-improve-your-pace-245880">original article</a>. </div>

Body

"She was the light of our lives": Family's tribute to hero kindergarten teacher

Eleanor Bryant, 43, put herself in harm's way to <a href="https://www.oversixty.com.au/health/caring/heroic-kindergarten-teacher-identified-after-horror-crash" target="_blank" rel="noopener">save preschoolers</a> from a water tanker that crashed into the Macedon Ranges Montessori Pre-School in Riddells Creek on Tuesday. Now, the mother-of-two and speech pathologist has been remembered for her caring and down-to-earth nature by her family. Bryant's husband and his two young kids expressed their grief in a statement, saying they were "devastated by the loss". "She was the light of our lives: a cherished mother, wife, daughter and sister, and beloved by all her family and enormous network of friends," the statement read. "Her infectious smile, sense of humour and passion for life made her a joy to be around. "There is an enormous hole in our hearts today. "We thank the emergency services for their tireless work and the public for their beautiful tributes. "We will miss her like crazy. We thank you for respecting our privacy at this difficult time." Bryant has also been remembered for the impact she has made as a speech pathologist, with mum Becky Burton thanking her for changing her daughter Milla's life. "I've never met someone that was so engaging, so down to earth, so caring and would do whatever it took [to make sure Milla was happy]," Burton said. "[She was] the most beautiful mum and person just taken so tragically." Bryant tragically died at the scene after the crash, while a three-year-old boy was injured and taken to the Royal Children's Hospital with serious but non-life-threatening injuries to his arm. He remains in hospital and is in a stable condition. The driver of the truck was also taken to the Royal Melbourne Hospital in a stable condition after the "experienced 68-year-old driver is understood to have suffered a medical episode". Parents and family members have since visited the kindergarten and laid flowers and cards as a tribute to Bryant. Family friend Walter Lucas held back tears as he remembered the beloved mother-of-two, saying: "She saved that kid's life.That kid is now going to go off and live their whole life. For her to take her life for that kid, she is more than a hero. "She's a superhero." Clinton Zammit, whose children went to the kindergarten, described the situation as "really sad". "I feel sorry for the woman who lost her life, her kids waking up today and having no mother. An unsung hero to push away kids and not care about anything else but the kids. "It hits home when my kids used to come here and there are other families involved. "We are a close-knit community, we are small but have big hearts and this will affect the community for a while." The pre-school is expected to remain closed for the coming weeks, and ongoing counselling has been offered onsite. Images: Nine

Caring

Man's DIY speed camera sign sparks debate

Over the years Aussies have come up with various ways to warn fellow drivers of nearby speed cameras, and one man took matters into his own hands by alerting motorists with a handwritten sign. Dressed in a neon orange singlet, a man was spotted at a busy intersection on the Princes Highway in Melbourne over the weekend waving to passing cars while holding up a "Beware Camera" sign. The photo was shared to local news service Wyndham TV's Instagram, and many were quick to praise the "local hero", who one identified as Daryl. “Absolute bloody Aussie legend right there,” one person commented. "A good citizen," another wrote. A few others commented that he was doing "God's work" and deserved to be bought "a beer or 10". However, not everyone was pleased with this act, with many questioning why he was interfering with road safety measures. “Motorists need to take responsibility for not speeding,” one person argued, before others defended the move, saying it would reduce speeding and crashes. Others asked why he didn't have more important things to do with his time. There is no specific law that prohibits warning other drivers about the presence of a speed camera, so the man's actions were legal. This is not the first time Aussies have done this, with many sharing videos exposing the "sneaky" way mobile speed cameras catch drivers in NSW on social media . One person shared a video to TikTok showing a mobile speed camera car parked next to another road sign. “This is their tactics, parking next to other signs so they blend in,” he said in the viral video. Image: Instagram/@wyndhamtv

Travel Trouble

From eye exams to blood tests and surgery: how doctors use light to diagnose disease

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/matthew-griffith-1539353">Matthew Griffith</a>, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</a> You’re not feeling well. You’ve had a pounding headache all week, dizzy spells and have vomited up your past few meals. You visit your GP to get some answers and sit while they shine a light in your eyes, order a blood test and request some medical imaging. Everything your GP just did relies on light. These are just some of the optical technologies that have had an enormous impact in how we diagnose disease. <h2>1. On-the-spot tests</h2> Point-of-care diagnostics allow doctors to test patients on the spot and get answers in minutes, rather than sending samples to a lab for analysis. The “flashlight” your GP uses to view the inside of your eye (known as an <a href="https://medlineplus.gov/ency/article/003881.htm">ophthalmoscope</a>) is a great example. This allows doctors to detect abnormal blood flow in the eye, deformations of the cornea (the outermost clear layer of the eye), or swollen optical discs (a round section at the back of the eye where the nerve link to the brain begins). Swollen discs are a sign of elevated pressure inside your head (or in the worst case, a brain tumour) that could be <a href="https://www.hopkinsmedicine.org/health/conditions-and-diseases/headache/increased-intracranial-pressure-icp-headache">causing your headaches</a>. The invention of <a href="https://openmedscience.com/lighting-the-way-in-healthcare-the-transformative-role-of-lasers-in-medicine/">lasers and LEDs</a> has enabled many other miniaturised technologies to be provided at the bedside or clinic rather than in the lab. <a href="https://theconversation.com/whats-a-pulse-oximeter-should-i-buy-one-to-monitor-covid-at-home-174457">Pulse oximetry</a> is a famous example, where a clip attached to your finger reports how well your blood is oxygenated. It does this by <a href="https://www.howequipmentworks.com/pulse_oximeter/">measuring</a> the different responses of oxygenated and de-oxygenated blood to different colours of light. Pulse oximetry is used at hospitals (and <a href="https://theconversation.com/whats-a-pulse-oximeter-should-i-buy-one-to-monitor-covid-at-home-174457">sometimes at home</a>) to monitor your respiratory and heart health. In hospitals, it is also a valuable tool for detecting <a href="https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(12)60107-X/fulltext">heart defects in babies</a>. <h2>2. Looking at molecules</h2> Now, back to that blood test. Analysing a small amount of your blood can diagnose <a href="https://theconversation.com/blood-tests-and-diagnosing-illness-what-can-blood-tell-us-about-whats-happening-in-our-body-80327">many different diseases</a>. A machine called an automated “full blood count analyser” tests for general markers of your health. This machine directs focused beams of light through blood samples held in small glass tubes. It counts the number of blood cells, determines their specific type, and reports the level of haemoglobin (the protein in red blood cells that distributes oxygen around your body). In minutes, this machine can provide a <a href="https://www.nuffieldhealth.com/article/inside-the-pathology-lab-what-happens-to-my-blood">snapshot</a> of your overall health. For more specific disease markers, blood serum is separated from the heavier cells by spinning in a rotating instrument called a centrifuge. The serum is then exposed to special chemical stains and enzyme assays that change colour depending on whether specific molecules, which may be the sign of a disease, are present. These colour changes can’t be detected with the naked eye. However, a light beam from an instrument called a <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5476943/#R88">spectrometer</a> can detect tiny amounts of these substances in the blood and determine if the biomarkers for diseases are present, and at what levels. <h2>3. Medical imaging</h2> Let’s re-visit those medical images your GP ordered. The development of fibre-optic technology, made famous for transforming high-speed digital communications (such as the NBN), allows light to get inside the body. The result? High-resolution optical imaging. A common example is an <a href="https://www.medicalnewstoday.com/articles/153737#risks-and-side-effects">endoscope</a>, where fibres with a tiny camera on the end are inserted into the body’s natural openings (such as your mouth or anus) to examine your gut or respiratory tracts. Surgeons can insert the same technology through tiny cuts to view the inside of the body on a video screen during <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9553337/">laparoscopic surgery</a> (also known as keyhole surgery) to diagnose and treat disease. <h2>How about the future?</h2> Progress in nanotechnology and a better understanding of the interactions of light with our tissues are leading to new light-based tools to help diagnose disease. These include: <ul> <li> <a href="https://onlinelibrary.wiley.com/doi/full/10.1002/advs.201903441">nanomaterials</a> (materials on an extremely small scale, many thousands of times smaller than the width of a human hair). These are being used in next-generation sensors and new diagnostic tests </li> <li> <a href="https://www.nature.com/articles/s41587-019-0045-y">wearable optical biosensors</a> the size of your fingernail can be included in devices such as watches, contact lenses or finger wraps. These devices allow non-invasive measurements of sweat, tears and saliva, in real time </li> <li> AI tools to analyse how blood serum scatters infrared light. This has allowed researchers to build a <a href="https://www.advancedsciencenews.com/powerful-diagnostic-approach-uses-light-to-detect-virtually-all-forms-of-cancer/">comprehensive database</a> of scatter patterns to detect <a href="https://onlinelibrary.wiley.com/doi/full/10.1002/aisy.202300006">any cancer</a> </li> <li> a type of non-invasive imaging called <a href="https://www.ncbi.nlm.nih.gov/books/NBK554044/">optical coherence tomography</a> for more detailed imaging of the eye, heart and skin </li> <li> fibre optic technology to deliver a tiny microscope into the body on the <a href="https://www.uwa.edu.au/projects/microscope-in-a-needle">tip of a needle</a>. </li> </ul> So the next time you’re at the GP and they perform (or order) some tests, chances are that at least one of those tests depend on light to help diagnose disease.<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/231379/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/matthew-griffith-1539353">Matthew Griffith</a>, Associate Professor and ARC Future Fellow and Director, UniSA Microscopy and Microanalysis Facilities, <a href="https://theconversation.com/institutions/university-of-south-australia-1180">University of South Australia</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/from-eye-exams-to-blood-tests-and-surgery-how-doctors-use-light-to-diagnose-disease-231379">original article</a>. </div>

Body

How light can shift your mood and mental health

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/jacob-crouse-981668">Jacob Crouse</a>, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a>; <a href="https://theconversation.com/profiles/emiliana-tonini-1638957">Emiliana Tonini</a>, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a>, and <a href="https://theconversation.com/profiles/ian-hickie-961">Ian Hickie</a>, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a> It’s spring and you’ve probably noticed a change in when the Sun rises and sets. But have you also noticed a change in your mood? We’ve known for a while that light plays a role in our wellbeing. Many of us tend to feel more positive when <a href="https://pubmed.ncbi.nlm.nih.gov/32925966/">spring returns</a>. But for others, big changes in light, such as at the start of spring, can be tough. And for many, bright light at night can be a problem. Here’s what’s going on. <h2>An ancient rhythm of light and mood</h2> In an <a href="https://theconversation.com/how-light-tells-you-when-to-sleep-focus-and-poo-236780">earlier article</a> in our series, we learned that light shining on the back of the eye sends “<a href="https://pubmed.ncbi.nlm.nih.gov/25451984/">timing signals</a>” to the brain and the master clock of the circadian system. This clock coordinates our daily (circadian) rhythms. “Clock genes” also regulate circadian rhythms. These genes control the timing of when many other genes <a href="https://pubmed.ncbi.nlm.nih.gov/31557726/">turn on and off</a> during the 24-hour, light-dark cycle. But how is this all linked with our mood and mental health? Circadian rhythms can be disrupted. This can happen if there are problems with how the body clock develops or functions, or if someone is routinely exposed to bright light at night. When circadian disruption happens, it increases the risk of certain <a href="https://pubmed.ncbi.nlm.nih.gov/33689801/">mental disorders</a>. These include <a href="https://www.sciencedirect.com/science/article/abs/pii/S0149763422000744">bipolar disorder</a> and <a href="https://bmcmedicine.biomedcentral.com/articles/10.1186/1741-7015-11-79">atypical depression</a> (a type of depression when someone is extra sleepy and has problems with their energy and metabolism). <h2>Light on the brain</h2> Light may also affect circuits <a href="https://pubmed.ncbi.nlm.nih.gov/35687680/">in the brain</a> that control mood, as <a href="https://pubmed.ncbi.nlm.nih.gov/23151476/">animal studies show</a>. There’s evidence this happens in humans. A brain-imaging study showed exposure to bright light in the daytime while inside the scanner <a href="https://www.cell.com/fulltext/S0960-9822(06)01758-1">changed the activity</a> of a brain region involved in mood and alertness. Another brain-imaging study <a href="https://pubmed.ncbi.nlm.nih.gov/22111663/">found</a> a link between daily exposure to sunlight and how the neurotransmitter (or chemical messenger) serotonin binds to receptors in the brain. We see alterations in serotonin binding in several <a href="https://pubmed.ncbi.nlm.nih.gov/33651238/">mental disorders</a>, including depression. <h2>What happens when the seasons change?</h2> Light can also affect mood and mental health as the seasons change. During autumn and winter, symptoms such as low mood and fatigue can develop. But often, once spring and summer come round, these symptoms go away. This is called “seasonality” or, when severe, “<a href="https://www.aafp.org/pubs/afp/issues/2020/1201/p668.html">seasonal affective disorder</a>”. What is less well known is that for other people, the change to spring and summer (when there is more light) can also come with a change in mood and mental health. Some people experience increases in energy and the drive to be active. This is positive for some but can be seriously destabilising for others. This too is an example of seasonality. Most people <a href="https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0239033">aren’t very seasonal</a>. But for those who are, seasonality has a <a href="https://pubmed.ncbi.nlm.nih.gov/8540777/">genetic component</a>. Relatives of people with seasonal affective disorder are more likely to also experience seasonality. Seasonality is also more common in conditions such as <a href="https://pubmed.ncbi.nlm.nih.gov/25063960/">bipolar disorder</a>. For many people with such conditions, the shift into shorter day-lengths during winter can trigger a depressive episode. Counterintuitively, the longer day-lengths in spring and summer can also destabilise people with bipolar disorder into an “<a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10947388/">activated</a>” state where energy and activity are in overdrive, and symptoms are harder to manage. So, seasonality can be serious. Alexis Hutcheon, who experiences seasonality and helped write this article, told us: <blockquote> […] the season change is like preparing for battle – I never know what’s coming, and I rarely come out unscathed. I’ve experienced both hypomanic and depressive episodes triggered by the season change, but regardless of whether I’m on the ‘up’ or the ‘down’, the one constant is that I can’t sleep. To manage, I try to stick to a strict routine, tweak medication, maximise my exposure to light, and always stay tuned in to those subtle shifts in mood. It’s a time of heightened awareness and trying to stay one step ahead. </blockquote> <h2>So what’s going on in the brain?</h2> One explanation for what’s going on in the brain when mental health fluctuates with the change in seasons relates to the neurotransmitters serotonin and dopamine. Serotonin helps regulate mood and is the target of <a href="https://journals.sagepub.com/doi/full/10.1177/0706743716659417">many</a> <a href="https://pubmed.ncbi.nlm.nih.gov/38185236/">antidepressants</a>. There is some evidence of seasonal changes in serotonin levels, potentially being lower <a href="https://academic.oup.com/brain/article/139/5/1605/2468755?login=false">in</a> <a href="https://www.thelancet.com/journals/lancet/article/PIIS0140-6736(02)11737-5/abstract?cc=y%3D">winter</a>. Dopamine is a neurotransmitter involved in reward, motivation and movement, and is also a target of some <a href="https://journals.sagepub.com/doi/full/10.1177/0706743716659417">antidepressants</a>. Levels of dopamine may also change with the <a href="https://www.nature.com/articles/s41398-023-02365-x">seasons</a>. But the neuroscience of seasonality is a developing area and more research <a href="https://www.nature.com/articles/s41398-023-02365-x">is needed</a> to know what’s going on in the brain. <h2>How about bright light at night?</h2> We know exposure to bright light at night (for instance, if someone is up all night) can disturb someone’s circadian rhythms. This type of circadian rhythm disturbance is associated with higher rates of symptoms <a href="https://www.nature.com/articles/s44220-023-00135-8">including</a> self-harm, depressive and anxiety symptoms, and lower wellbeing. It is also associated with higher rates of <a href="https://pubmed.ncbi.nlm.nih.gov/32639562/">mental disorders</a>, such as major depression, bipolar disorder, psychotic disorders and post-traumatic stress disorder (or PTSD). Why is this? Bright light at night confuses and destabilises the body clock. It disrupts the rhythmic regulation of mood, cognition, appetite, metabolism and <a href="https://pubmed.ncbi.nlm.nih.gov/38214638/">many</a> <a href="https://pubmed.ncbi.nlm.nih.gov/34419186/">other</a> <a href="https://pubmed.ncbi.nlm.nih.gov/33689801/">mental</a> <a href="https://pubmed.ncbi.nlm.nih.gov/36661342/">processes</a>. But people differ hugely in their <a href="https://www.pnas.org/doi/10.1073/pnas.1901824116">sensitivity to light</a>. While still a hypothesis, people who are most sensitive to light may be the most vulnerable to body clock disturbances caused by bright light at night, which then leads to a higher risk of mental health problems. <h2>Where to from here?</h2> Learning about light will help people better manage their mental health conditions. By encouraging people to better align their lives to the light-dark cycle (to stabilise their body clock) we may also help prevent conditions such as <a href="https://pubmed.ncbi.nlm.nih.gov/34419186/">depression</a> and <a href="https://www.sciencedirect.com/science/article/pii/S0149763422000744">bipolar disorder</a> emerging in the first place. Healthy light behaviours – avoiding light at night and seeking light during the day – are good for everyone. But they might be especially helpful for people <a href="https://www.sciencedirect.com/science/article/pii/S0149763422000744">at risk</a> of mental health problems. These include people with a family history of mental health problems or people who are <a href="https://pubmed.ncbi.nlm.nih.gov/38185236/">night owls</a> (late sleepers and late risers), who are more at risk of body clock disturbances. <hr /> Alexis Hutcheon has lived experience of a mental health condition and helped write this article. If this article has raised issues for you, or if you’re concerned about someone you know, call Lifeline on 13 11 14.<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/231282/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/jacob-crouse-981668">Jacob Crouse</a>, Research Fellow in Youth Mental Health, Brain and Mind Centre, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a>; <a href="https://theconversation.com/profiles/emiliana-tonini-1638957">Emiliana Tonini</a>, Postdoctoral Research Fellow, Brain and Mind Centre, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</a>, and <a href="https://theconversation.com/profiles/ian-hickie-961">Ian Hickie</a>, Co-Director, Health and Policy, Brain and Mind Centre, <a href="https://theconversation.com/institutions/university-of-sydney-841">University of Sydney</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-light-can-shift-your-mood-and-mental-health-231282">original article</a>. </div>

Mind

How light tells you when to sleep, focus and poo

<div class="theconversation-article-body"> <a href="https://theconversation.com/profiles/frederic-gachon-1379094">Frederic Gachon</a>, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a> and <a href="https://theconversation.com/profiles/benjamin-weger-1646210">Benjamin Weger</a>, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a> Exposure to light is crucial for our physical and mental health, as this and future articles in the series will show. But the timing of that light exposure is also crucial. This tells our body to wake up in the morning, when to poo and the time of day to best focus or be alert. When we’re exposed to light also controls our body temperature, blood pressure and even chemical reactions in our body. But how does our body know when it’s time to do all this? And what’s light got to do with it? <h2>What is the body clock, actually?</h2> One of the key roles of light is to re-set our body clock, also known as the circadian clock. This works like an internal oscillator, similar to an actual clock, ticking away as you read this article. But rather than ticking you can hear, the body clock is a network of genes and proteins that regulate each other. This network sends signals to organs via hormones and the nervous system. These complex loops of interactions and communications have a rhythm of about 24 hours. In fact, we don’t have one clock, we have trillions of body clocks throughout the body. The central clock is in the hypothalamus region of the brain, and each cell in every organ has its own. These clocks work in concert to help us adapt to the daily cycle of light and dark, aligning our body’s functions with the time of day. However, our body clock is not precise and works to a rhythm of about 24 hours (24 hours 30 minutes on average). So every morning, the central clock needs to be reset, signalling the start of a new day. This is why light is so important. The central clock is directly connected to <a href="https://journals.sagepub.com/doi/abs/10.1177/07487304231225706">light-sensing cells</a> in our retinas (the back of the eye). This daily re-setting of the body clock with morning light is essential for ensuring our body works well, in sync with our environment. In parallel, <a href="https://theconversation.com/does-it-matter-what-time-of-day-i-eat-and-can-intermittent-fasting-improve-my-health-heres-what-the-science-says-203762">when we eat food</a> also plays a role in re-setting the body clock, but this time the clock in organs other than the brain, such as the liver, kidneys or the gut. So it’s easy to see how our daily routines are closely linked with our body clocks. And in turn, our body clocks shape how our body works at set times of the day. <h2>What time of day?</h2> <figure class="align-center zoomable"><a href="https://images.theconversation.com/files/627494/original/file-20241023-14-729bed.gif?ixlib=rb-4.1.0&q=45&auto=format&w=1000&fit=clip"><img src="https://images.theconversation.com/files/627494/original/file-20241023-14-729bed.gif?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/627494/original/file-20241023-14-729bed.gif?ixlib=rb-4.1.0&q=45&auto=format&w=600&h=450&fit=crop&dpr=1 600w, https://images.theconversation.com/files/627494/original/file-20241023-14-729bed.gif?ixlib=rb-4.1.0&q=30&auto=format&w=600&h=450&fit=crop&dpr=2 1200w, https://images.theconversation.com/files/627494/original/file-20241023-14-729bed.gif?ixlib=rb-4.1.0&q=15&auto=format&w=600&h=450&fit=crop&dpr=3 1800w, https://images.theconversation.com/files/627494/original/file-20241023-14-729bed.gif?ixlib=rb-4.1.0&q=45&auto=format&w=754&h=566&fit=crop&dpr=1 754w, https://images.theconversation.com/files/627494/original/file-20241023-14-729bed.gif?ixlib=rb-4.1.0&q=30&auto=format&w=754&h=566&fit=crop&dpr=2 1508w, https://images.theconversation.com/files/627494/original/file-20241023-14-729bed.gif?ixlib=rb-4.1.0&q=15&auto=format&w=754&h=566&fit=crop&dpr=3 2262w" alt="" /></a><figcaption>Matt Garrow/The Conversation. <a class="source" href="https://delos.com/blog/why-natural-light-is-important-for-mental-and-physical-health/">Adapted from Delos</a>, <a class="license" href="http://creativecommons.org/licenses/by/4.0/">CC BY</a></figcaption></figure> <h2>Let’s take a closer look at sleep</h2> The naturally occurring brain hormone <a href="https://pubmed.ncbi.nlm.nih.gov/30311830/">melatonin</a> is linked to our central clock and makes us feel sleepy at certain times of day. When it’s light, our body stops making melatonin (its production is inhibited) and we are alert. Closer to bedtime, the hormone is made, then secreted, making us feel drowsy. Our sleep is also <a href="https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2019.00944/full">partly controlled</a> by <a href="https://www.annualreviews.org/content/journals/10.1146/annurev-genom-121222-120306">our genes</a>, which are part of our central clock. These genes influence our <a href="https://theconversation.com/does-it-matter-what-time-i-go-to-bed-198146">chronotype</a> – whether we are a “lark” (early riser), “night owl” (late sleeper) or a “dove” (somewhere in between). But exposure to light at night when we are supposed to be sleeping can have harmful effects. Even dim light from light pollution can impair our <a href="https://www.pnas.org/doi/10.1073/pnas.2113290119">heart rate and how we metabolise sugar</a> (glucose), may lead to <a href="https://doi.org/10.1038/s44220-023-00135-8">psychiatric disorders</a> such as depression, anxiety and bipolar disorder, and increases the overall risk of <a href="https://www.pnas.org/doi/10.1073/pnas.2405924121">premature death</a>. The main reason for these harmful effects is that light “at the wrong time” disturbs the body clock, and these effects are more pronounced for “night owls”. This “misaligned” exposure to light is also connected to the detrimental health effects we often see in people who <a href="https://theconversation.com/why-does-night-shift-increase-the-risk-of-cancer-diabetes-and-heart-disease-heres-what-we-know-so-far-190652">work night shifts</a>, such as an increased risk of cancer, diabetes and heart disease. <h2>How about the gut?</h2> Digestion also follows a circadian rhythm. Muscles in the colon that help move waste <a href="https://doi.org/10.1111/j.1572-0241.2004.40453.x">are more active</a> during the day and slow down at night. The most significant increase in colon movement starts at 6.30am. This is one of the reasons why most people feel the urge to poo <a href="https://theconversation.com/why-do-i-poo-in-the-morning-a-gut-expert-explains-229624">in the early morning</a> rather than at night. The gut’s day-night rhythm is a direct result of the action of the gut’s own clock and the central clock (which synchronises the gut with the rest of the body). It’s also influenced by when we eat. <h2>How about focusing?</h2> Our body clock also helps control our attention and alertness levels by changing how our brain functions at certain times of day. Attention and alertness levels improve in the afternoon and evening but dip during the night and early morning. Those fluctuations <a href="https://www.frontiersin.org/journals/molecular-neuroscience/articles/10.3389/fnmol.2012.00050/full">impact performance</a> and can lead to decreased productivity and an <a href="https://www.nature.com/articles/s41598-019-40914-x">increased risk</a> of errors and accidents during the less-alert hours. So it’s important to perform certain tasks that <a href="https://pubmed.ncbi.nlm.nih.gov/30923475/">require our attention</a> at certain times of day. That includes driving. In fact, disruption of the circadian clock at the start of daylight savings – when our body hasn’t had a chance to adapt to the clocks changing – <a href="https://www.sciencedirect.com/science/article/pii/S0960982219316781?via%3Dihub">increases the risk</a> of a car accident, particularly in the morning. <h2>What else does our body clock control?</h2> Our body clock influences many other aspects of our biology, including: <ul> <li>physical performance by controlling the activity of our <a href="https://doi.org/10.1038/s41574-023-00805-8">muscles</a></li> <li>blood pressure by controlling the <a href="https://theconversation.com/what-time-of-day-should-i-take-my-medicine-125809">system of hormones</a> involved in regulating our blood volume and blood vessels</li> <li>body temperature by controlling our metabolism and our level of physical activity</li> <li>how our body handles drugs and toxins by <a href="https://doi.org/10.1080/17460441.2023.2224554">controlling enzymes</a> involved in how the liver and kidneys eliminate these substances from the body.</li> </ul> <h2>Morning light is important</h2> But what does this all mean for us? Exposure to light, especially in the morning, is crucial for synchronising our circadian clock and bodily functions. As well as setting us up for a good night’s sleep, increased morning light exposure benefits our <a href="https://www.sciencedirect.com/science/article/pii/S0165032721008612?via%3Dihub">mental health</a> and <a href="https://academic.oup.com/jcem/article/101/9/3539/2806883">reduces the risk of obesity</a>. So boosting our exposure to morning light – for example, by going for a walk, or having breakfast outside – can directly benefit our mental and metabolic health. However, there are other aspects about which we have less control, including <a href="https://www.sciencedirect.com/science/article/pii/S0168952524001100">the genes</a> that control our body clock.<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/236780/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/frederic-gachon-1379094">Frederic Gachon</a>, Associate Professor, Physiology of Circadian Rhythms, Institute for Molecular Bioscience, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</a> and <a href="https://theconversation.com/profiles/benjamin-weger-1646210">Benjamin Weger</a>, NHMRC Emerging Leadership Fellow Institute for Molecular Bioscience, <a href="https://theconversation.com/institutions/the-university-of-queensland-805">The University of Queensland</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-light-tells-you-when-to-sleep-focus-and-poo-236780">original article</a>. </div>

Body

High-speed rail plans may finally end Australia’s 40-year wait to get on board

<div class="theconversation-article-body"> <a href="https://theconversation.com/profiles/philip-laird-3503">Philip Laird</a>, <a href="https://theconversation.com/institutions/university-of-wollongong-711">University of Wollongong</a> Australia has debated and studied high-speed rail for four decades. The High Speed Rail Authority has begun <a href="https://www.hsra.gov.au/project">work on a project</a> that could finally deliver some high-speed rail in the 2030s. The Albanese government set up the authority in 2022. It also committed A$500 million to plan and protect a high-speed rail corridor between Sydney and Newcastle. This corridor was prioritised due to significant capacity constraints on the existing line, among other reasons. The ultimate plan is for a high-speed rail network to connect Brisbane, Sydney, Canberra, Melbourne and regional communities across the east coast. The network would help Australia in its urgent task to reduce greenhouse gas emissions from transport. These <a href="https://www.infrastructure.gov.au/infrastructure-transport-vehicles/towards-net-zero-transport-and-infrastructure">continue to increase</a> even as emissions from other sectors fall. The authority has now publicly outlined plans for the first stage of this east coast network. After a history of failed proposals dating back to 1984, the new plans provide some cause for optimism that Australia could have some high-speed rail by 2037. <h2>What is high-speed rail and why do we need it?</h2> The International Rail Union of Railways <a href="https://uic.org/passenger/highspeed">defines high-speed rail</a> as new lines designed for speeds of 250km/h or more and upgraded lines for speeds of at least 200km/h. High-speed rail could greatly reduce transport emissions by replacing <a href="https://theconversation.com/wondering-how-to-get-from-brisbane-to-melbourne-without-wrecking-the-climate-our-transport-choices-make-a-huge-difference-237396">air travel in particular</a>. For example, the <a href="https://www.bitre.gov.au/publications/ongoing/domestic_airline_activity-monthly_publications">7.92 million passengers</a> flying between Melbourne and Sydney in 2023-24 produced about 1.5 million tonnes of emissions. Including <a href="https://theconversation.com/how-air-travellers-can-cut-their-door-to-door-emissions-right-now-by-as-much-as-13-on-the-sydney-melbourne-route-211099">travel to and from airports</a> and other flight routes along the corridor (Sydney or Melbourne to Canberra, Albury etc), this adds up to about 2% of <a href="https://www.dcceew.gov.au/climate-change/strategies/annual-climate-change-statement-2023">annual domestic transport emissions</a>. A Sydney–Melbourne high-speed rail link could cut emissions to a fraction of those from <a href="https://theconversation.com/wondering-how-to-get-from-brisbane-to-melbourne-without-wrecking-the-climate-our-transport-choices-make-a-huge-difference-237396">air</a> and <a href="https://theconversation.com/we-compared-land-transport-options-for-getting-to-net-zero-hands-down-electric-rail-is-the-best-234092">road</a> transport. If Australia is to achieve <a href="https://www.dcceew.gov.au/climate-change/emissions-reduction/net-zero">net zero by 2050</a>, a <a href="https://theconversation.com/we-compared-land-transport-options-for-getting-to-net-zero-hands-down-electric-rail-is-the-best-234092">shift to rail will be essential</a>. High-speed city-to-city rail services will be needed to become an attractive alternative to air travel. <h2>What is the authority working on?</h2> Early this year the High Speed Rail Authority gained a new CEO, Tim Parker, with extensive experience in delivering mega-projects. In late August, the authority outlined its plans at an industry briefing in Newcastle. The authority has commissioned eight studies, including a business case for a Sydney–Newcastle line. Significantly, it will include the cost of future highway upgrades if high-speed rail does not proceed. This study, along with a report on how high-speed rail will proceed along Australia’s east coast, is due by the end of this year. Also under way is a <a href="https://minister.infrastructure.gov.au/c-king/media-release/all-aboard-high-speed-rail-accelerates-first-investigation-works">geotechnical study</a> that includes drilling 27 boreholes. It will help determine the proposed depths of two long rail tunnels and guide decisions on crossing the Hawkesbury River and the route to the Central Coast and on to Newcastle. All going well, including land acquisition and agreements with the New South Wales government (which could include funding), work could <a href="https://www.newcastleherald.com.au/story/8743698/newcastle-high-speed-rail-possible-by-2037-as-tunnel-plan-emerges">start in 2027 and be completed by 2037</a>. <h2>Many questions remain</h2> Given the time and money required to deliver a Sydney–Newcastle line, bipartisan support will be needed. However, the federal opposition is yet to make a clear commitment to high-speed rail. There are other uncertainties too. Will the trains be operated by the public or private sector? The latter was the intention for projects that were scrapped decades ago, such as the CSIRO-proposed Very Fast Train (<a href="http://www.repositoryofideas.com/VFT_information.html">VFT</a>) linking Sydney, Canberra and Melbourne, and the Sydney–Canberra <a href="https://trid.trb.org/View/1203853">Speedrail</a>. And how will the engineering projects be delivered? The new authority must learn from the project management <a href="https://www.infrastructure.gov.au/department/media/news/independent-review-inland-rail-released">problems in delivering the Inland Rail</a> freight line. The project is running late and costs have blown out. Some major federally funded government projects have worked well. These include upgrades of the national highway system (by state road authorities and contractors) and the new <a href="https://www.westernsydneyairport.gov.au/">Western Sydney International Airport</a>, which is nearing completion. <h2>And what about a full Sydney–Melbourne line?</h2> The big question is when work will start on a Sydney–Melbourne high-speed rail service. In 2019, International High-Speed Rail Association chairman <a href="https://ara.net.au/media-release/ausrailplus-2019-conference-exhibition-3-5-december-2019-in-sydney/">Masafumi Shukuri estimated</a> building this line could take 20 years. The present line is 60km longer than it should be as the route dates back to the steam age. It also has far too many tight curves. This means train travel on this line is slower than cars and trucks. As former NSW State Rail chief Len Harper <a href="https://theconversation.com/more-than-ever-its-time-to-upgrade-the-sydney-melbourne-railway-187169">said</a> in 1995, this railway was already “inadequate for current and future needs” even back then. When the VFT was proposed in 1984, questions were raised as to whether our population was big enough for such a project. Now, more than 15.5 million people live in NSW, Victoria and the Australian Capital Territory. Melbourne–Sydney is the <a href="https://www.smh.com.au/traveller/travel-news/the-world-s-busiest-flight-routes-and-airports-revealed-20231222-p5et7n.html">world’s fifth-busiest flight route</a>. Advocacy group Fastrack Australia <a href="https://www.fastrackaustralia.net/hsr-implementation-plan">has called</a> for a Sydney–Melbourne track built to high-speed standards and able to carry freight. The estimated travel time is four hours. This group and the <a href="https://www.railfutures.org.au/category/submissions/%20July%202024%20reducing%20emissions%20in%20freight">Rail Futures Institute</a> propose the line be built in stages, with priority given to the section from near Macarthur to Mittagong in NSW. This would reduce the current line’s length by about 18km and allow for better Sydney–Canberra train services. Urgent action is needed to protect the rail corridor from encroaching urban development. <h2>Australia needs to catch up</h2> In June 2023, when the new authority started work, I <a href="https://theconversation.com/can-the-new-high-speed-rail-authority-deliver-after-4-decades-of-costly-studies-206287">observed</a> that Australia must surely hold the world record for studies into high-speed rail with no construction. In stark contrast, this October marks the 60th anniversary of the world’s first dedicated high-speed rail line, the Tokaido Shinkansen in Japan linking Tokyo to Shin-Osaka. The network has since grown in stages to about 3,000km of lines. Today, high-speed rail <a href="https://uic.org/passenger/highspeed/article/high-speed-data-and-atlas">operates in 21 countries</a> over about 60,000km of lines – China has about 40,000km. Indonesia’s high-speed rail service between Jakarta and Bandung started running last year. India and Thailand are in the advanced stages of delivering high-speed rail. It’s also under construction in another 11 countries. Australia could finally join them in the next few years if it starts building the Sydney–Newcastle line.<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/238232/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/philip-laird-3503">Philip Laird</a>, Honorary Principal Fellow, <a href="https://theconversation.com/institutions/university-of-wollongong-711">University of Wollongong</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/high-speed-rail-plans-may-finally-end-australias-40-year-wait-to-get-on-board-238232">original article</a>. </div>

Domestic Travel

Millions warned over huge change to speed cameras

For years, drivers in New South Wales have relied on the point-to-point speed camera rule, which only captures the speed of heavy vehicles, but that rule is set to change as part of a new trial as the state attempts to lower their death toll. The point-to-point, also known as average speed cameras are set to be turned on for all vehicles in two regional locations during the trial. The first location will be 15-kilometre stretch on the Pacific highway between Kew and Lake Innes in Port Macquarie, and the second location will be on the Hume Highway between Coolac and Gundagai, with 16km between the two cameras. “NSW is the only jurisdiction in the world to use average speed cameras but restrict their use to heavy vehicles only,” Roads Minister John Graham said. “In the context of a rising road toll, now is the time to trial these cameras for light vehicles and understand if we can keep more people safe on the road more of the time.” He added that all other states in Australia, as well as the UK and Norway have found the average speed cameras to be effective. “All other mainland Australian states and countries like the UK, Norway, Italy and the Netherlands have found average speed cameras to be effective and we aim to be as rigorous as possible to be sure they will also reduce road trauma in NSW.” “Rather than test your speed at a particular point in time, like a mobile speed camera, these test the speed you’re driving over 15 or 16 kilometres,” he said. “That means it’s a truer reflection of how quickly people are driving.” He added that the trial is focused on regional NSW as it has suffered a disproportionate amount of road fatalities, with six road deaths and 33 serious injuries between 2018 and 2022. “Although only a third of people live in regional New South Wales, that’s where two thirds of the deaths from road crashes happen," he said. Speeding contributed to 44 per cent of NSW road fatalities last year, three-quarters of which were in the regional parts of the state. The trial will run for six months, and for those caught speeding, they will be given a 60-day warning letter period, before financial and licence penalties kick in. Images: news.com.au

Legal

Yes, blue light from your phone can harm your skin. A dermatologist explains

<div class="theconversation-article-body"><a href="https://theconversation.com/profiles/michael-freeman-223922">Michael Freeman</a>, <a href="https://theconversation.com/institutions/bond-university-863">Bond University</a> Social media is full of claims that everyday habits can harm your skin. It’s also full of recommendations or advertisements for products that can protect you. Now social media has blue light from our devices in its sights. So can scrolling on our phones really damage your skin? And will applying creams or lotions help? Here’s what the evidence says and what we should really be focusing on. <h2>Remind me, what actually is blue light?</h2> Blue light is part of the visible light spectrum. Sunlight is the strongest source. But our electronic devices – such as our phones, laptops and TVs – also emit it, albeit at levels <a href="https://melasmaclinic.com.au/wp-content/uploads/2024/01/Melasma-LEDS.pdf">100-1,000 times</a> lower. Seeing as we spend so much time using these devices, there has been some concern about the impact of blue light on our health, including <a href="https://theconversation.com/do-blue-light-glasses-really-work-can-they-reduce-eye-strain-or-help-me-sleep-213145">on our eyes and sleep</a>. Now, we’re learning more about the impact of blue light on our skin. <h2>How does blue light affect the skin?</h2> The evidence for blue light’s impact on skin is still emerging. But there are some interesting findings. 1. Blue light can increase pigmentation <a href="https://academic.oup.com/ced/article-abstract/46/5/934/6598472?redirectedFrom=fulltext&login=false">Studies</a> <a href="https://onlinelibrary.wiley.com/doi/full/10.1111/srt.13401">suggest</a> exposure to blue light can stimulate production of melanin, the natural skin pigment that gives skin its colour. So too much blue light can potentially worsen hyperpigmentation – overproduction of melanin leading to dark spots on the skin – especially in people with darker skin. 2. Blue light can give you wrinkles Some research <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6280109/">suggests</a> blue light might damage collagen, a protein essential for skin structure, potentially accelerating the formation of wrinkles. A laboratory <a href="https://pubmed.ncbi.nlm.nih.gov/29399830/">study suggests</a> this can happen if you hold your device one centimetre from your skin for as little as an hour. However, for most people, if you hold your device more than 10cm away from your skin, that would reduce your exposure <a href="https://en.wikipedia.org/wiki/Inverse-square_law">100-fold</a>. So this is much less likely to be significant. 3. Blue light can disrupt your sleep, affecting your skin If the skin around your eyes looks dull or puffy, it’s easy to blame this directly on blue light. But as we know blue light affects sleep, what you’re probably seeing are some of the visible signs of sleep deprivation. We know blue light is particularly good at <a href="https://journals.physiology.org/doi/full/10.1152/japplphysiol.01413.2009?rss=1">suppressing</a> production of melatonin. This natural hormone normally signals to our bodies when it’s time for sleep and helps regulate our sleep-wake cycle. By suppressing melatonin, blue light exposure before bed disrupts this natural process, making it harder to fall asleep and potentially reducing the <a href="https://www.tandfonline.com/doi/abs/10.1080/07420528.2023.2173606">quality of your sleep</a>. The stimulating nature of screen content further disrupts sleep. Social media feeds, news articles, video games, or even work emails can keep our brains active and alert, hindering the transition into a sleep state. Long-term sleep problems can also <a href="https://academic.oup.com/ced/article-abstract/40/1/17/6621145?login=false">worsen</a> existing skin conditions, such as acne, eczema and rosacea. Sleep deprivation can elevate cortisol levels, a stress hormone that breaks down collagen, the protein responsible for skin’s firmness. Lack of sleep can also weaken the skin’s natural barrier, making it more susceptible to environmental damage and dryness. <h2>Can skincare protect me?</h2> The beauty industry has capitalised on concerns about blue light and offers a range of protective products such as mists, serums and lip glosses. From a practical perspective, probably only those with the more troublesome hyperpigmentation known as <a href="https://dermnetnz.org/topics/melasma">melasma</a> need to be concerned about blue light from devices. This condition requires the skin to be well protected from all visible light at all times. The only products that are totally effective are those that block all light, namely mineral-based suncreens or some cosmetics. If you can’t see the skin through them they are going to be effective. But there is a lack of rigorous testing for non-opaque products outside laboratories. This makes it difficult to assess if they work and if it’s worth adding them to your skincare routine. <h2>What can I do to minimise blue light then?</h2> Here are some simple steps you can take to minimise your exposure to blue light, especially at night when it can disrupt your sleep: <ul> <li> use the “night mode” setting on your device or use a blue-light filter app to reduce your exposure to blue light in the evening </li> <li> minimise screen time before bed and create a relaxing bedtime routine to avoid the types of sleep disturbances that can affect the health of your skin </li> <li> hold your phone or device away from your skin to minimise exposure to blue light </li> <li> use sunscreen. Mineral and physical sunscreens containing titanium dioxide and iron oxides offer broad protection, including from blue light. </li> </ul> <h2>In a nutshell</h2> Blue light exposure has been linked with some skin concerns, particularly pigmentation for people with darker skin. However, research is ongoing. While skincare to protect against blue light shows promise, more testing is needed to determine if it works. For now, prioritise good sun protection with a broad-spectrum sunscreen, which not only protects against UV, but also light.<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/233335/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/michael-freeman-223922">Michael Freeman</a>, Associate Professor of Dermatology, <a href="https://theconversation.com/institutions/bond-university-863">Bond 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/yes-blue-light-from-your-phone-can-harm-your-skin-a-dermatologist-explains-233335">original article</a>. </div>

Body

"What a joke": Backlash over new strict speed limit

Melbourne residents have lashed out at a local council over the controversial decision to reduce the speed limit on bust roads. Every street in Fitzroy and Collingwood, except state-managed roads such as major thoroughfares, are now under the new strict speed limit of a mere 30 kilometres an hour, which has been enforced by the Yarra City Council. Thoroughfares that are currently exempt from the 30km/h limit include Johnston Street, Nicholson Street, Hoddle Street, Alexandra Parade and Victoria Parade, although the council is working hard to bring the speed limits on these major roads down to 40km/h or 60km/h. Yarra City Council Mayor, Edward Crossland, said there is clear evidence that reducing speed limits will lessen the number of road accidents and save lives. “We want to make our streets safer and better places for people of all ages and abilities whether you are walking, wheeling, cycling or driving. 30km can have a huge benefit and we know there is a lot of support for this initiative across our community,” he said. “Research shows that a person walking is at least twice as likely to be killed by a driver travelling at 40km than at 30km and that safer speed limits in urban areas has minimal impact on travel time." The council first began trialling the 30km/h speed limit in 2018 in northern parts of Fitzroy and Collingwood, and brought the number of crashes down by 52 percent over the first 12 months. Despite the evidence that reduced speeds help the community at large, not everyone is impressed by the change, with social media users claiming the lower speed limit will “never be enforced”. Another claimed, “When the police commissioner comes out and says it’s ridiculous and nobody will follow the limits then yeah, fair to say it won’t be enforced.” In 2023, Victorian Police chief commissioner Shane Patton, told ABC radio that changing the speed limit to 30km/h was “not the answer”. “I think no one’s going to obey it. It’s ridiculous,” he said. Social media users have branded the change an attempt at “revenue raising”, with one commenter saying: “Just another way to nab us with fines! All about the revenue.” “What a joke,” another person said, while one claimed people might as well start pushing their cars if the speed limit is so low. However, there are also those that have praised the council’s decision, branding it a “great initiative”. “Great news! More traffic calming please,” one person said. Image credits: Shutterstock

Legal

New details shed light on Rebel Wilson's allegations against actor

New details have emerged of Rebel Wilson's allegations against Sacha Baron-Cohen, with the Aussie actress claiming he acted inappropriately towards her while filming a movie in 2014. In the days after Rebel took to Instagram to expose Baron-Cohen for allegedly "<a href="https://oversixty.com.au/finance/legal/rebel-wilson-exposes-a-lister-who-threatened-her-over-book-release" target="_blank" rel="noopener">threatening</a>" her about the publishing of her tell-all memoir, excerpts of Rebel Rising have been published to further detail when the actors worked together on the film Grimsby. The pair both starred in the comedy film 10 years ago, with Rebel detailing in her book how the Hollywood actor, known for his controversial roles as Borat and Ali G, acted inappropriately towards her on set. Once filming began for the movie, Wilson claims that Cohen (SBC) would keep requesting her to go “naked” in a scene, according excerpts of the book obtained by <a href="https://people.com/rebel-wilson-details-allegations-about-sacha-baron-cohen-he-calls-false-exclusive-8620597" target="_blank" rel="noopener">People</a> magazine. She wrote, “It felt like every time I’d speak to SBC, he’d mention that he wanted me to go naked in a future scene. I was like, ‘Ha, I don’t do nudity, Sacha.’ ” Wilson alleges that Baron-Cohen's behaviour and strange requests only intensified throughout the shoot, coming to a head while they were filming a scene in Cape Town at a soccer stadium. “SBC summons me via a production assistant saying that I’m needed to film an additional scene. ‘Okay, well, we’re gonna film this extra scene,’ SBC says. Then he pulls his pants down … SBC says very matter-of-factly: ‘Okay, now I want you to stick your finger up my a**.’ And I’m like, ‘What?? … No!'” Wilson then continues to allege in the book, “I was now scared. I wanted to get out of there, so I finally compromised: I slapped him on the ass and improvised a few lines as the character.” Sacha Baron-Cohen released a statement via his representatives saying the claims are "demonstrably false", denying the pair had any tension while working together. “While we appreciate the importance of speaking out, these demonstrably false claims are directly contradicted by extensive detailed evidence, including contemporaneous documents, film footage and eyewitness accounts from those present before, during and after the production of The Brothers Grimsby,” a statement from Cohen’s team said in response to Wilson’s allegations. On Tuesday, Rebel took to Instagram to say she was being "threatened" by Baron-Cohen over the release of such information in her book, which is set for release on April 2nd. Rebel named and shamed the actor, writing, “I will not be bullied or silenced with high priced lawyer or PR crisis managers. The ‘a**hole’ that I am talking about in ONE CHAPTER of my book is Sacha Baron Cohen.” "Now the a**hole is trying to threaten me. He’s trying to stop press coming out about my new book. But the book WILL come out and you will all know the truth.” Image credits: Getty Images

Legal

Pilot captures once in a lifetime photo of the Northern Lights

A pilot has captured the breathtaking moment he flew beside the Northern Lights while manning a cargo plane. Christiaan van Heijst, a pilot and photographer, shared the incredible image to Instagram, which shows the "turquoise aerial fire" appear in the form of the aurora borealis. Beneath the sea of twirling green lights, the city lights of Reykjavik, the capital of Iceland, illuminated the horizon in a contrasting orange glow far away. The extraordinary photo has racked up thousands of likes in just a few days, as Captain van Heijst shared the entertaining story of his flight and the moment he captured the picture in the caption. “Artificial lights on the horizon: a beacon of civilisation and connectedness to the world after many hours of isolation: no communication in my headset except for the bare minimums in regard to procedures, nor any personal interaction from my Icelandic captain, who’s been mute ever since the landing gear went up on the other side of the planet,” he explained in the post. <blockquote class="instagram-media" style="background: #FFF; border: 0; border-radius: 3px; box-shadow: 0 0 1px 0 rgba(0,0,0,0.5),0 1px 10px 0 rgba(0,0,0,0.15); margin: 1px; max-width: 540px; min-width: 326px; padding: 0; width: calc(100% - 2px);" data-instgrm-permalink="https://www.instagram.com/p/C41LrzMsgN6/?utm_source=ig_embed&utm_campaign=loading" data-instgrm-version="14"> <div style="padding: 16px;"> <div style="display: flex; flex-direction: row; align-items: center;"> <div style="background-color: #f4f4f4; border-radius: 50%; flex-grow: 0; height: 40px; margin-right: 14px; width: 40px;"> </div> <div style="display: flex; flex-direction: column; flex-grow: 1; justify-content: center;"> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 100px;"> </div> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; width: 60px;"> </div> </div> </div> <div style="padding: 19% 0;"> </div> <div style="display: block; height: 50px; margin: 0 auto 12px; width: 50px;"> </div> <div style="padding-top: 8px;"> <div style="color: #3897f0; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: 550; line-height: 18px;">View this post on Instagram</div> </div> <div style="padding: 12.5% 0;"> </div> <div style="display: flex; flex-direction: row; margin-bottom: 14px; align-items: center;"> <div> <div style="background-color: #f4f4f4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(0px) translateY(7px);"> </div> <div style="background-color: #f4f4f4; height: 12.5px; transform: rotate(-45deg) translateX(3px) translateY(1px); width: 12.5px; flex-grow: 0; margin-right: 14px; margin-left: 2px;"> </div> <div style="background-color: #f4f4f4; border-radius: 50%; height: 12.5px; width: 12.5px; transform: translateX(9px) translateY(-18px);"> </div> </div> <div style="margin-left: 8px;"> <div style="background-color: #f4f4f4; border-radius: 50%; flex-grow: 0; height: 20px; width: 20px;"> </div> <div style="width: 0; height: 0; border-top: 2px solid transparent; border-left: 6px solid #f4f4f4; border-bottom: 2px solid transparent; transform: translateX(16px) translateY(-4px) rotate(30deg);"> </div> </div> <div style="margin-left: auto;"> <div style="width: 0px; border-top: 8px solid #F4F4F4; border-right: 8px solid transparent; transform: translateY(16px);"> </div> <div style="background-color: #f4f4f4; flex-grow: 0; height: 12px; width: 16px; transform: translateY(-4px);"> </div> <div style="width: 0; height: 0; border-top: 8px solid #F4F4F4; border-left: 8px solid transparent; transform: translateY(-4px) translateX(8px);"> </div> </div> </div> <div style="display: flex; flex-direction: column; flex-grow: 1; justify-content: center; margin-bottom: 24px;"> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; margin-bottom: 6px; width: 224px;"> </div> <div style="background-color: #f4f4f4; border-radius: 4px; flex-grow: 0; height: 14px; width: 144px;"> </div> </div> <p style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; line-height: 17px; margin-bottom: 0; margin-top: 8px; overflow: hidden; padding: 8px 0 7px; text-align: center; text-overflow: ellipsis; white-space: nowrap;"><a style="color: #c9c8cd; font-family: Arial,sans-serif; font-size: 14px; font-style: normal; font-weight: normal; line-height: 17px; text-decoration: none;" href="https://www.instagram.com/p/C41LrzMsgN6/?utm_source=ig_embed&utm_campaign=loading" target="_blank" rel="noopener">A post shared by Christiaan van Heijst (@jpcvanheijst)</a> </div> </blockquote> “A character known for his absolute approach to colleagues and deliberate lack of conversational depth during flight." “Hours later, the lights of Reykjavik are abundantly visible and without need, heed or warning, he opens up the intercom and takes his time to start his declaration for a single-person audience: me. Staring out of his window, eyes set on the distant orange glow from his left-hand window, he solemnly proclaims a few seconds later: ‘… the centre of the universe …’, allowing some moments of quiet contemplation and thought on my side, before switching his intercom off again, as if to underline this statement and retreating back in his cone of silence." Mr van Heijst said after the pair touched down four hours later in a cargo-airport in central-Europe, neither shared a single word “besides his solemn proclamation of Iceland’s true worth”. The incredible post has unsurprisingly been met with comments from stunned followers in awe of the natural beauty. “Wow! Incredible shot! Silence is golden indeed,” one person wrote. Mr van Heijst is one of the world’s leading aviation photographers, and has been lucky enough to witness the Northern Lights several times from above, capturing the moment each time to share online. Image credits: Instagram

International Travel

Surprising move after top cop busted for speeding

Victoria Police found themselves facing embarrassment recently when one of their top-ranking officers, Glenn Weir, was caught speeding. Weir, who serves as Victoria’s Road Policing Assistant Commissioner, was captured by a hidden speed camera in an undercover police car on February 29, traveling at 58km/h in a 50km/h zone. What makes this incident particularly noteworthy is not just the fact that a high-ranking police officer was caught breaking the law, but also the response Weir himself has taken. Despite being eligible to have the charge downgraded to a warning due to his clean driving record, Weir has chosen to accept the consequences – a $337 fine and a single demerit point penalty. In a statement addressing the incident, Weir expressed remorse and took full responsibility for his actions. He acknowledged the severity of the mistake, especially given his position as an advocate for road safety throughout his career. "I take full responsibility for this error and am mortified it has occurred," Weir said. "I’ve spent my entire career advocating for road safety and this incident proves nobody is immune from making a mistake on the road." Weir’s willingness to own up to his mistake sets an important example for accountability, not just within the police force but for all members of society. Moreover, his case underscores the importance of adhering to speed limits, with Victoria Police having long advocated for the correlation between speeding and road accidents. According to their data, speed is one of the leading causes of car crashes in the state, with the rise in the state’s road toll by almost 12% February 2023 to February 2024 further highlighting the urgency of addressing speeding and other reckless driving behaviours. Weir’s decision to accept the consequences of his actions demonstrates integrity and a commitment to upholding the principles of road safety. Image: 7 News

Legal

War in Ukraine affected wellbeing worldwide, but people’s speed of recovery depended on their personality

<a href="https://theconversation.com/profiles/luke-smillie-7502">Luke Smillie</a>, <a href="https://theconversation.com/institutions/the-university-of-melbourne-722">The University of Melbourne</a> The war in Ukraine has had impacts around the world. <a href="https://mitsloan.mit.edu/ideas-made-to-matter/ripple-effects-russia-ukraine-war-test-global-economies">Supply chains</a> have been disrupted, the <a href="https://news.un.org/pages/wp-content/uploads/2022/06/GCRG_2nd-Brief_Jun8_2022_FINAL.pdf?utm_source=United+Nations&utm_medium=Brief&utm_campaign=Global+Crisis+Response">cost of living</a> has soared and we’ve seen the <a href="https://www.unhcr.org/hk/en/73141-ukraine-fastest-growing-refugee-crisis-in-europe-since-wwii.html">fastest-growing refugee crisis since World War II</a>. All of these are in addition to the devastating humanitarian and economic impacts within Ukraine. Our international team was conducting a global study on wellbeing in the lead up to and after the Russian invasion. This provided a unique opportunity to examine the psychological impact of the outbreak of war. As we explain in a new study published in <a href="https://www.nature.com/articles/s41467-024-44693-6">Nature Communications</a>, we learned the toll on people’s wellbeing was evident across nations, not just <a href="https://ijmhs.biomedcentral.com/articles/10.1186/s13033-023-00598-3">in Ukraine</a>. These effects appear to have been temporary – at least for the average person. But people with certain psychological vulnerabilities struggled to recover from the shock of the war. <h2>Tracking wellbeing during the outbreak of war</h2> People who took part in our study completed a rigorous “<a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2773515/">experience-sampling</a>” protocol. Specifically, we asked them to report their momentary wellbeing four times per day for a whole month. Data collection began in October 2021 and continued throughout 2022. So we had been tracking wellbeing around the world during the weeks surrounding the outbreak of war in February 2022. We also collected measures of personality, along with various sociodemographic variables (including age, gender, political views). This enabled us to assess whether different people responded differently to the crisis. We could also compare these effects across countries. Our analyses focused primarily on 1,341 participants living in 17 European countries, excluding Ukraine itself (44,894 experience-sampling reports in total). We also expanded these analyses to capture the experiences of 1,735 people living in 43 countries around the world (54,851 experience-sampling reports) – including in Australia. <h2>A global dip in wellbeing</h2> On February 24 2022, the day Russia invaded Ukraine, there was a sharp decline in wellbeing around the world. There was no decline in the month leading up to the outbreak of war, suggesting the change in wellbeing was not already occurring for some other reason. However, there was a gradual increase in wellbeing during the month after the Russian invasion, suggestive of a “return to baseline” effect. Such effects are commonly reported in psychological research: situations and events that impact our wellbeing often (<a href="https://www.researchgate.net/publication/237535630_Adaptation_and_the_Set-Point_Model_of_Subjective_Well-BeingDoes_Happiness_Change_After_Major_Life_Events">though not always</a>) do so <a href="https://www.researchgate.net/publication/7062343_Beyond_the_Hedonic_Treadmill_Revising_the_Adaptation_Theory_of_Well-Being">temporarily</a>. Unsurprisingly, people in Europe experienced a sharper dip in wellbeing compared to people living elsewhere around the world. Presumably the war was much more salient for those closest to the conflict, compared to those living on an entirely different continent. Interestingly, day-to-day fluctuations in wellbeing mirrored the salience of the war on social media as events unfolded. Specifically, wellbeing was lower on days when there were more tweets mentioning Ukraine on Twitter/X. Our results indicate that, on average, it took around two months for people to return to their baseline levels of wellbeing after the invasion. <h2>Different people, different recoveries</h2> There are <a href="https://pubmed.ncbi.nlm.nih.gov/31944795/">strong links</a> between our wellbeing and our individual personalities. However, the dip in wellbeing following the Russian invasion was fairly uniform across individuals. None of the individual factors assessed in our study, including personality and sociodemographic factors, predicted people’s response to the outbreak of war. On the other hand, personality did play a role in how quickly people recovered. Individual differences in people’s recovery were linked to a personality trait called “stability”. Stability is a broad dimension of personality that combines low neuroticism with high agreeableness and conscientiousness (three traits from the <a href="https://www.sciencedirect.com/topics/social-sciences/big-five">Big Five</a> personality framework). Stability is so named because it reflects the stability of one’s overall psychological functioning. This can be illustrated by breaking stability down into its three components: <ol> <li> low neuroticism describes <a href="https://www.pnas.org/doi/full/10.1073/pnas.2212154120">emotional stability</a>. People low in this trait experience less intense negative emotions such as anxiety, fear or anger, in response to negative events </li> <li> high agreeableness describes <a href="https://psycnet.apa.org/record/2018-63285-010">social stability</a>. People high in this trait are generally more cooperative, kind, and motivated to maintain social harmony </li> <li> high conscientiousness describes <a href="https://doi.org/10.1016/j.paid.2023.112331">motivational stability</a>. People high in this trait show more effective patterns of goal-directed self-regulation. </li> </ol> So, our data show that people with less stable personalities fared worse in terms of recovering from the impact the war in Ukraine had on wellbeing. In a supplementary analysis, we found the effect of stability was driven specifically by neuroticism and agreeableness. The fact that people higher in neuroticism recovered more slowly accords with a wealth of research linking this trait with <a href="https://pubmed.ncbi.nlm.nih.gov/10573882/">coping difficulties</a> and <a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5428182/">poor mental health</a>. These effects of personality on recovery were stronger than those of sociodemographic factors, such as age, gender or political views, which were not statistically significant. Overall, our findings suggest that people with certain psychological vulnerabilities will often struggle to recover from the shock of global events such as the outbreak of war in Ukraine.<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/224147/count.gif?distributor=republish-lightbox-basic" alt="The Conversation" width="1" height="1" /> <a href="https://theconversation.com/profiles/luke-smillie-7502">Luke Smillie</a>, Professor in Personality Psychology, <a href="https://theconversation.com/institutions/the-university-of-melbourne-722">The University of Melbourne</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/war-in-ukraine-affected-wellbeing-worldwide-but-peoples-speed-of-recovery-depended-on-their-personality-224147">original article</a>.

Mind

Experts shed new light on Samantha Murphy case

A panel of experts have shed new light on the case of missing mum Samantha Murphy. The mother-of-three went missing on February 4 after going for her usual morning run in a local park in Ballarat. Despite major search efforts from the missing persons squad, specialists and the local Ballarat community, she has still not been found, and now a panel of experts have gathered to discuss the possibilities of what could've happened to Murphy. Former Victorian detective Damian Marrett, criminal psychologist Dr Peter Ashkar, missing persons specialist Valentine Smith and cyber expert Nigel Phair discussed a number of different scenarios in Channel Nine's show Under Investigation on Wednesday night. “The idea that Samantha has actually wilfully left the family is just unfathomable and just implausible to me,” Dr Ashkar said. Presenter Liz Hayes, who spoke to mine shaft explorer Raymond Shaw said that there's a possibility Murphy's body has been buried in one of the abandoned mine shafts around Ballarat. “I think there could be anywhere between 4000 and 5000 gold mines just underneath the town," Shaw told Hayes. The panel agreed that the most likely scenario was that Murphy’s body had been dumped in a mineshaft after meeting with foul play, as they believe that there was "no way" Murphy fell down a mineshaft by accident, as the locals all know how to navigate the terrain. “They could be a great place to conceal a body or a crime after the fact … and you’d probably never find it,” Marrett said. Dr Ashkar added that the absence of any trace of Murphy could point to her having been attacked by a “psychopathic predator … who would know that area, like the back of their hand”. The panel also considered a potential new clue, the possible sighting of a damaged vehicle, which was alluded to in a <a href="https://www.oversixty.com.au/health/caring/major-development-in-search-for-samantha-murphy" target="_blank" rel="noopener">police statement </a>requesting for new information about the case. The experts said that if there was a damaged car in the area, it could mean that Murphy was kidnapped at the 7km point of her run and could still be alive. “I would still like to believe the very real possibility that it’s a kidnapping and she’s still alive,” Dr Ashkar said. “That’s my hope. But I absolutely feel that whoever has taken her and abducted, they are very systematic and organised and knew very well what they were doing.” Marrett added that the police’s interest in the damaged car was significant. “They didn’t just say a car, they said a damaged car, it’s so specific,” he said. “So was that damage caused with this incident or was that damage because someone saw a damaged car leave?” Image: Nine / Facebook

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“Bloody ripper of a meteor” lights up Perth skies

A few lucky Western Australians have witnessed the moment a bright green meteor flashed brightly across the state's South West. The meteor was the size of a cricket ball and had a 200-kilometre-long tail, which was first spotted at around 8.50pm on Wednesday after entering the atmosphere over Pemberton. The rare spectacle, which only happens around three times a year, lasted about five seconds and travelled at a speed of 30 km/h before the mix of iron, rock and ice dissolved over the Southern Ocean. “Iron meteors give off that beautiful green glow,” Perth Observatory spokesperson Matt Woods told 7NEWS. Experts also said that this was triggered by the outer layer of the meteor melting because of intense friction. The observatory said that the meteor had set off a flood of messages, emails and calls from the people that witnessed the natural phenomenon. “That was a bloody ripper of a meteor tonight,” they posted on their Facebook page. One witness said that you had to see it with your own eyes to fully appreciate its beauty. “I will say it was way better in person. It looked almost rainbow-coloured. Just spectacular,” commented one person. “Did anyone just see a bright streak of light shooting from the sky? It was too bright to be a shooting star,” another person shared on social media. “It was massive and extremely bright.” Image: 7NEWS

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