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The world, the universe and us

The world, the universe and us

著者： 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 政治・政府 科学
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  • China’s carbon emissions fall; norovirus vaccine; chaotic breakup of the solar system

    China’s carbon emissions fall; norovirus vaccine; chaotic breakup of the solar system
    2025/05/16
    Episode 303 China is becoming a de facto leader in the fight against climate change. Right now it’s the world’s biggest emitter of carbon dioxide, but after years of keeping its emissions steady, they have finally begun to fall. And this is all while China’s power demands have increased - suggesting its efforts to build clean energy are paying off. But is this enough to make a realistic dent on curbing global warming? And how will the uncertainty of President Trump’s administration impact this trend? A vaccine for the dreaded norovirus is in the works - and it’s already proving effective. Known as the winter vomiting bug, this nasty gastrointestinal illness affects 685 million people a year. Thanks to a company in San Francisco and some heroic people who served as test subjects, we may be closer than ever to staving it off. At some point, in a few billion years, our solar system may break up in the most spectacular fashion, simply because of random chaos and instability. But now researchers have found a bigger threat to the survival of our solar system - passing stars. Less random and chaotic, stars actually pass by our sun fairly regularly, and could dislodge planets like Pluto, flinging them out of orbit and impacting the other planets. Do you find yourself teary eyed when cutting onions? Well, you’re in luck. Scientists have found the perfect way to cut an onion without crying. We provide a live demonstration for your amusement. Chapters: (00:47) Decline of China’s carbon emissions (11:05) Norovirus vaccine (17:52) Catastrophic break-up of our solar system (23:26) Scientific way to cut an onion without crying Hosted by Rowan Hooper and Penny Sarchet, with guests James Dinneen, Carissa Wong, Alex Wilkins, Lauri Myllivirta, Chris Packham and Sean Raymond. To read more about these stories, visit https://www.newscientist.com/ Learn more about your ad choices. Visit megaphone.fm/adchoices
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    28 分
  • Ocean wonders and the new arguments against deep-sea mining; biophotons emitted from living things; drumming chimps and the origin of religion

    Ocean wonders and the new arguments against deep-sea mining; biophotons emitted from living things; drumming chimps and the origin of religion
    2025/05/09
    We dive into the mysterious world of the deep sea, sparked by a recent executive order aiming to ramp up offshore mineral extraction, as well as new research revealing that 99.999 per cent of the seabed remains unexplored. Experts discuss the surprising lack of deep-sea exploration, the ecological wonders already discovered, like hydrothermal vents and bizarre deep-sea creatures, and the debate over mining nodules from the ocean floor. With new battery tech on the horizon and mounting environmental concerns, questions grow about whether deep-sea mining is driven by necessity or a disregard for the ecosystems we barely understand. Researchers have captured the faint glow emitted by living things to explore what happens when life ends. First theorised a century ago by Russian physicist Alexander Gurwitsch, biophotons are ultraweak light emissions which appear to track metabolism and fade dramatically at death. Could this eerie glow one day help detect disease, or even confirm the moment of death? Chimpanzees across Africa have been observed rhythmically drumming on trees, but what are they trying to say? A new study spanning 11 chimp communities reveals that these drum beats may be individual signatures, offering fresh insight into the roots of musicality and communication. The team discuss how chimps may even show signs of awe or ritual, with their unique responses to storms, fire, and waterfalls. Could drumming mark not just the evolution of rhythm, but the first flickers of spiritual thought? Chapters: 00:00 Intro 01:33 The mysterious deep sea and the race to mine its resources 13:43 The science of biophotons: what happens when we die? 20:27 Chimpanzee drumming: Rhythm, awe, and the roots of musicality Hosted by Rowan Hooper and Penny Sarchet, with guests Alex Wilkins. Maddie Cuff, Dustin Mulvaney, Olive Heffernan, Alasdair Mackenzie, Catherine Hobaiter, and Jessica Battle. To read more about these stories, visit https://www.newscientist.com/ Learn more about your ad choices. Visit megaphone.fm/adchoices
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    28 分
  • Is our understanding of light completely wrong? Two consciousness theories go head-to-head; decoding dolphin whistles

    Is our understanding of light completely wrong? Two consciousness theories go head-to-head; decoding dolphin whistles
    2025/05/02
    Episode 301 Our understanding of the nature of light might be completely wrong. The double-slit experiment is one of the most famous experiments in physics and is how we’ve understood light for over 200 years. But a team is now suggesting we’ve got the interpretation all wrong - that light is in fact not a wave and is only made up of particles. If true, this is major. The authors of this study were left scrambling as “all hell broke loose” when they made the discovery. And the best part? Dark photons may be involved. A 7 year study into the nature of consciousness has reached its conclusion - pitting two major theories against one another. Integrated information theory suggests levels of consciousness exist in any system, including rocks and fetuses. Global neuronal workspace theory claims specific brain regions are responsible for consciousness. After 256 brain scans - are we any closer to an answer? A decades-long study involving 170 wild dolphins has allowed biologists to decode their whistles. Hear dolphins recorded in the waters of Sarasota, Florida, which show how the animals communicate in various ways - and even give themselves names. Chapters: (00:45) Dark photons and our understanding of light (11:07) Major theories of consciousness go head-to-head (21:05) Decoding whale language Hosted by Rowan Hooper and Penny Sarchet, with guests Chelsea Whyte, Celso Villas-Boas, Gerhard Rempe, Christof Koch, Anil Seth and Laela Sayigh. To read more about these stories, visit https://www.newscientist.com/ Learn more about your ad choices. Visit megaphone.fm/adchoices
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    29 分

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