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Redaktionellt bearbetade vetenskapsnyheter — 3193 artiklar

Fit with just five minutes’ exercise a day? I don’t believe it | Devi Sridhar
<p>Everyone these days wants to optimise their workouts, but when a study seems too good to be true, it usually is</p><ul><li><p>Prof Devi Sridhar is chair of global public health at the University of Edinburgh</p></li></ul><p>We live in an increasingly polarised world – and I’m not talking about politics, I’m talking about exercise. There’s a fitness community obsessed with constant <a href="https://www.theguardian.com/commentisfree/2026/feb/28/bizarre-exercises-online-influencer-workout-recommend">optimisation and hacks</a>: how can you get from 50 press-ups to 100, from an eight-minute mile to seven minutes, or increase your deadlifts from body weight to double or triple body weight – ideally using just “one weird trick” or novel method no one has seen before.</p><p>It seems as if no one is happy with basic fitness or steady progress. Or people are overly concerned with what’s secretly holding them back, from sleep to “I had a couple of glasses of wine … it <a href="https://metro.co.uk/2026/06/02/celebrities-take-aim-steven-bartlett-claiming-two-glasses-wine-ruined-life-three-days-28620379/">ruined three days of my life</a>” (that’s Steven Bartlett’s <a href="https://www.bbc.co.uk/news/articles/c4gpz163vg2o">podcast</a>).</p><p>Prof Devi Sridhar is chair of global public health at the University of Edinburgh</p> <a href="https://www.theguardian.com/commentisfree/2026/jun/23/fit-five-minutes-workout-exercise-a-day-dont-believe-it">Continue reading...</a>
Extreme heat: is the UK becoming a 40C country? – podcast
<p>Met Office forecasters have issued a rare red weather warning for England, with temperatures potentially reaching 40C (104F) in some places. Europe is also dealing with a debilitating heatwave, with schools closed, trains cancelled and France even restricting the consumption of alcohol outdoors to take pressure off the emergency services. The high temperatures coincide with the coming El Niño, which some scientists have nicknamed Godzilla for its predicted strength. To find out whether the two are linked, Ian Sample hears from our Europe climate correspondent, Ajit Niranjan. He explains why it’s so hot, why we could be in for even worse and how we can keep as cool as possible</p><p><em>Clips: Sky News, BBC, Arirang News</em></p><p><strong><a href="https://www.theguardian.com/environment/2026/jun/21/el-nino-fears-godzilla-strength-hunger-famine">El Niño is back with a vengeance – and fears of ‘Godzilla’ strength may be the least of our worries</a></strong></p> <a href="https://www.theguardian.com/science/audio/2026/jun/23/extreme-heat-is-uk-becoming-40c-country-podcast">Continue reading...</a>
Interstellar comet may be oldest object seen in our solar system, research finds
<p>Observations suggest comet spent billions of years on ‘vast unimaginable trajectories’ around our galaxy</p><p>An interstellar comet that blazed past the sun last year could be nearly three times older than our solar system and is unlike anything ever before seen in our cosmic back yard, astronomers said on Monday.</p><p>The comet 3I/Atlas is just the third visitor from beyond our solar system that humanity has ever observed, its unusual brightness offering scientists an unprecedented opportunity to study something that came from elsewhere in the galaxy.</p> <a href="https://www.theguardian.com/science/2026/jun/22/interstellar-comet-may-be-oldest-object-seen-in-our-solar-system-research-finds">Continue reading...</a>
Did you solve it? Dotty data and silly sentences
<p>The solutions to today’s puzzles – and the winner of the Anguish Languish contest</p><p><a href="https://www.theguardian.com/science/2026/jun/22/can-you-solve-it-dotty-data-and-silly-sentences">Earlier today </a>I set these three puzzles about deception. Here they are again with solutions.</p><p><strong>1. Super syllabus</strong></p> <a href="https://www.theguardian.com/science/2026/jun/22/did-you-solve-it-dotty-data-and-silly-sentences">Continue reading...</a>