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The world, the universe and us

The world, the universe and us

Von: New Scientist
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 From the evolution of intelligent life, to the mysteries of consciousness; from the threat of the climate crisis to the search for dark matter, The world, the universe and us is your essential weekly dose of science and wonder in an uncertain world. Hosted by journalists Dr Rowan Hooper and Dr Penny Sarchet and joined each week by expert scientists in the field, the show draws on New Scientist’s unparalleled depth of reporting to put the stories that matter into context. Feed your curiosity with the podcast that will restore your sense of optimism and nourish your brain. For more visit newscientist.com/podcasts© 2025 New Scientist Podcasts Politik & Regierungen Wissenschaft
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  • The collapse of America’s health data system; How sleep affects your focus; Life on Mars in liquid veins?

    The collapse of America’s health data system; How sleep affects your focus; Life on Mars in liquid veins?
    Oct 31 2025
    Episode 329 America’s health data system is in crisis. The US government has been bleeding public health experts – many of whom run crucial public health surveys and databases which help identify, monitor and respond to health threats across the country. From drug use to food security and birth data, discover the 5 surveys most critically hit by the axing of over 20,000 jobs. If nothing is done to address this, vital health information will be missed and the results could be catastrophic. Do you find it difficult to concentrate after a bad night’s sleep? This might be really common, but scientists are still trying to figure out why it happens. A new finding suggests it might have something to do with the brain’s “rinse cycle” – a process where your brain washes away metabolic waste and toxic proteins. Although this usually happens while you sleep, researchers have discovered it may continue in the day if you’re sleep deprived. Life might exist on Mars right now, thanks to a network of liquid water on the Red Planet. Researchers examining Mars’ soil say there’s a good chance tiny veins of liquid water are hiding under the Martian permafrost and that they could support microbial life. This finding has scientists excited, with one suggesting “it’s not impossible that life could exist in the Martian near surface.” Chapters: (00:00) Intro (01:00) The collapse of America’s health data system (08:00) How sleep affects your focus (16:40) Best place to search for life on Mars Hosted by Penny Sarchet and Timothy Revell, with guests Grace Wade, Carissa Wong and Leah Crane. To read more about these stories, visit https://www.newscientist.com/ Check out Carissa’s story on the lymphatic system here: https://www.newscientist.com/article/2499831-the-extraordinary-influence-of-the-lymphatic-system-on-our-health/ Find Wellcome’s podcast here: https://wellcome.org/insights/podcast Learn more about your ad choices. Visit megaphone.fm/adchoices
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    24 Min.
  • How mRNA vaccines teach your body to kill cancer; Grim state of climate action; Why birds sing the dawn chorus

    How mRNA vaccines teach your body to kill cancer; Grim state of climate action; Why birds sing the dawn chorus
    Oct 24 2025
    Episode 328 Not only has the mRNA covid vaccine saved 14 million lives, it may also help our bodies fight off cancer. A study of cancer patients undergoing immunotherapy treatment showed those who received an mRNA vaccine lived nearly twice as long - and this effect was discovered by accident. In a trial of cancer vaccines, Elias Sayour’s team at the University of Florida used standard mRNA vaccines as a control - they weren’t meant to do anything. Except they did - and the effect was huge. It’s still early days, but as we await more trial results, people are beginning to speculate how this might transform cancer treatment. Ahead of COP30, the World Resources Institute has published the State of Climate Action 2025 report - and it doesn’t make for good reading. It finds that we have failed to meet any of the goals laid out in the Paris agreement to avoid breaching 1.5°C of global warming. From deforestation to coal use, we’re not moving fast enough on anything. Hear from the authors of the report, who offer an important message of hope. Why do birds sing the dawn chorus? Many theories exist - 11 in fact - but a new one has emerged, after scientists were studying zebra finches in the lab. Hear their conclusion while enjoying the serenity of birdsong, recorded at some of the RSPB’s nature reserves. Chapters: (00:00) Intro (00:34) How mRNA vaccines fight cancer (10:00) State of Climate Action report (21:13) Why birds sing the dawn chorus Hosted by Rowan Hooper and Penny Sarchet, with guests Michael Le Page, Clea Schumer and Sophie Boehm. To read more about these stories, visit https://www.newscientist.com/ Learn more about Yakult at www.yakult.co.uk Learn more about your ad choices. Visit megaphone.fm/adchoices
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    29 Min.
  • First climate tipping point triggered; Man controls another person's body by brain implant; health worries over sumo wrestlers

    First climate tipping point triggered; Man controls another person's body by brain implant; health worries over sumo wrestlers
    Oct 17 2025
    Episode 326 The world’s first major climate tipping point has been triggered. The decimation of warm water coral populations caused by rising temperatures is now irreversible - passing the point of no return. The global consequences of widescale coral dieback could be catastrophic, so experts are sounding the alarm. But is anyone listening? A man with paralysis has telepathically controlled the hands of another person. Keith Thomas is unable to move or feel through his hands. But thanks to a new advancement, using brain and muscle electrodes, he was able to control the hands of a non-paralysed woman using his thoughts alone. Could this one day lead to Avatar-like body control technology? For only the second time in its 1,500-year history, professional Sumo wrestling has left Japan. A Grand Sumo Tournament is being held at London’s Albert Hall, where over 40 elite wrestlers are competing in a five day tournament. Sumo writer John Gunning discusses the physics of sumo, the incredible diets of the wrestlers and the worrying consequences of the sport on their longevity. Chapters: (00:00) Intro (01:34) Coral tipping point (11:23) Avatar brain implant (22:10) The longevity of sumo wrestlers Hosted by Rowan Hooper and Penny Sarchet, with guests Madeleine Cuff, Carissa Wong and John Gunning. To read more about these stories, visit https://www.newscientist.com/ Learn more about Yakult at www.yakult.co.uk Get your ticket for New Scientist Live here: https://live.newscientist.com/ Learn more about your ad choices. Visit megaphone.fm/adchoices
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    34 Min.
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