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PODCAST

The world, the universe and us

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

science

All Episodes

30:44

The world is running out of water - can cloud-seeding...

The world, the universe and us ·

2026/02/20

Episode 346The world is running out of water, with many countries suffering from significant water shortages. We’re now having to rely on groundwater that takes thousands of years to replenish – so what can we do? One group says, to save us from worldwide “water bankruptcy”, we need to artificially change the weather. Although “cloud-seeding” has been around for a long time, a new technique is getting big results in the US. But the idea is becoming increasingly controversial – with cloud-seeding

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40:10

How ancient humans crossed the vast ocean; Brain...

The world, the universe and us ·

2026/02/13

Episode 345More than 8,500 years ago, ancient people crossed the ocean to the remote island of Malta for the first time. Long before compasses or sails were invented, these prehistoric people navigated the seas on logs, using the stars to travel vast distances. Recent findings show we’ve long underestimated the voyaging capabilities of stone-age hunter-gatherers. We discuss the many examples of ancient travel - and what this all tells us about the ancient mind. Could just one hour of brain

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37:39

Why Elon Musk plans to put 1 million satellites in...

The world, the universe and us ·

2026/02/06

Episode 344Elon Musk has announced he wants to merge SpaceX with another of his companies, xAI, and launch one million satellites into space. One reason - according to Musk - is to eventually harness the entire power of the sun, a sci-fi sounding idea that would make us a Kardashev Type II civilisation. But he also wants the satellites to help power AI and move data centres off Earth. Is his goal realistic… and what would be the consequences? Parents desperate to get their children to sleep are

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40:29

Mini human brain grows blood vessels; The...

The world, the universe and us ·

2026/01/30

Episode 343The task of growing human brains in a lab has taken a step forward. Scientists have been creating brain organoids since 2013, but have now grown blood vessels in them for the first time. These mini brains resemble the developing cortex - the area of the brain that thinks, feels and stores memories. These advancements will help us learn more about the brain and conditions like dementia. But what if we go too far and they become conscious? Geoengineering is being talked about more and

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41:10

The 5 worst ideas of the 21st century – and how they...

The world, the universe and us ·

2026/01/23

Episode 342Social media began with the best intentions - but it soon went sour. Platforms that once fostered connection are now driven by an endless desire to monopolise our time. From the endless scroll to ragebait content, social media is no longer designed to connect us with friends and family - but to profit from our attention. And that’s not to mention the damaging political influence it can have. As countries and governments move to act against it, is there a good solution to these

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54:25

Rutger Bregman on the crisis of moral ambition; Why...

The world, the universe and us ·

2026/01/16

Episode 341"The best minds of my generation are thinking about how to make people click ads. That sucks." A compelling quote that sums up the thesis of Rutger Bregman’s new book. In Moral Ambition, the Dutch historian and the best-selling author argues that smart people need to stop wasting their lives in “BS” jobs - and turn their skills to causes that benefit humanity. By reflecting on the history of the abolitionist and women’s rights movements, he explains why it’s never too late to take

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31:18

Why does America want Greenland?; Mystery of dark...

The world, the universe and us ·

2026/01/09

Episode 340Acquiring Greenland has been deemed a national security priority by America. President Trump wants to use the country to deter adversaries in the Arctic, have control over its rare minerals and oil - and maybe even build experimental cities. But with the challenges of a changing climate, difficulty actually extracting any natural resources and the fact that Greenland isn’t free to occupy, how realistic are Trump's goals? Human-plant hybrid cells are being used to answer the mystery of

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32:30

Humans are finally heading back to the moon; Cheaper...

The world, the universe and us ·

2026/01/02

Episode 339Humans are finally going back to the moon. NASA’s Artemis II mission is set to launch in April, taking four astronauts in a loop around the moon. If it goes well, it’ll set the stage for a lunar landing by Artemis III - bringing us closer to creating permanent settlements on the surface. And that’s not all - SpaceX is planning to visit Mars this year as part of its plans to colonise the Red Planet. Plus, in May we might see the launch of a new American space station. Will these missions

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24:03

Best science TV, film and books of 2025 | The New...

The world, the universe and us ·

2025/12/26

Episode 336Looking for something great to read or watch on TV over the festive period? We’ve got you covered. In a special edition of the podcast, we share our favourite books, TV and films of 2025 - for those moments when you need a break from the festivities. From pure science fiction to books exploring climate change and the history of our early ancestors, we have something for everyone. Below is a list of our top picks. Films and TV Ocean with David Attenborough Andor Season 2 The White

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59:57

Top Science Stories of 2025 | The New Scientist...

The world, the universe and us ·

2025/12/19

Episode 337As we reach the end of the year, catch up on some of New Scientist’s most exciting and thought-provoking features of the past twelve months. For decades we’ve got autism in girls all wrong. Symptoms present quite differently in girls to boys, meaning they often go undiagnosed. So why have we failed to see the differences - and why are girls so often neglected by autism research? We review a feature written by Gina Rippon - one of the scientists studying autism who admits to getting it

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33:02

Orcas and dolphins are now hunting together; Genetic...

The world, the universe and us ·

2025/12/12

Episode 336In an unlikely turn of events, orcas and dolphins have been observed teaming up - to hunt and kill massive chinook salmon in the pacific. Given that orcas sometimes prey on dolphins, what’s going on? Despite the promising signs of cooperation between these two species, there may be something less heartwarming at play. We dig into the findings and discuss other surprising ways animals cooperate with each other. From schizophrenia to bipolar disease, autism to OCD, many mental conditions

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25:25

How exercise shrinks tumours and starves cancer;...

The world, the universe and us ·

2025/12/05

Episode 335Exercise has been shown to shrink tumours by 60 per cent. A new study shows another link between regular exercise and cancer prevention, this time revealing that muscle cells may outcompete cancer cells for energy - basically starving them. We explore the links between metabolism and glucose - with the caveat that so far this has only been demonstrated in mice, in a small study. The interstellar object 3I/ATLAS may be even weirder than we thought. Ever since we spotted this comet from

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39:11

The evolution of sperm and the enduring mystery of...

The world, the universe and us ·

2025/11/28

Episode 334Which sperm is the oldest sperm - the ancestor sperm that came before all others? Well, you might think it links back to an ancient animal that came before us, but the oldest sperm may actually predate animals altogether. We explore this plus the enduring mystery of the scrotum - and why a male’s most important body part is so delicate and…exposed. The team hears about the variation in scrotum morphology across mammals, and the evolution of “non-scrotality”. Our brains undergo four

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30:43

The origin and evolution of music: Steve Pretty plays...

The world, the universe and us ·

2025/11/21

Episode 333It’s not often you get to see or hear someone playing music on a conch shell. So prepare yourself for a musical treat with musician and podcaster Steve Pretty, who brings into the studio a trumpet and a collection of his favourite conches, rigged up to some modern electronics. Steve is best known as the bandleader of the Hackney Colliery Band, and also hosts the Steve Pretty On the Origin of the Pieces podcast. Performing live on the show and recreating the acoustics of prehistoric

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45:02

New genome of ancient human; 95% of us have a dormant...

The world, the universe and us ·

2025/11/14

Episode 332For only the second time, the genome of an ancient Denisovan has been sequenced - thanks to the discovery of a 200,000-year-old tooth found in a Siberian cave. This ancient member of the human family has long been a mystery, so this genome is being described as a bombshell moment, revealing an early stage of Denisovan history. We explore how this reshapes our understanding about the origins of our species. Some 95 per cent of us have a dormant virus, lurking in our bodies - waiting to

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27:15

Why the claims about Hitler’s genome are misleading

The world, the universe and us ·

2025/11/13

Episode 331This week sees the broadcast on Channel 4 in the UK of a documentary called Hitler’s DNA: Blueprint of a dictator. Geneticists have managed to find a DNA sample from Adolf Hitler and have sequenced it and verified it, and now we have his genome. The big question is what does this really tell us – what can we tell from someone’s genome? In this special episode of the podcast, Rowan Hooper is joined by two of the lead figures on the documentary. Turi King is a geneticist at the

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31:30

COP30: The world's climate future hinges on this meeting

The world, the universe and us ·

2025/11/07

Episode 330COP30 is nearly upon us - and this climate conference may be the most crucial so far. In a year where we’ve seen the first major global tipping point reached, destructive wildfires raging in Los Angeles and much more, joint action has never been more urgent. But as hope starts to wane and climate goals continue to be missed, many are questioning the value of the COPs. Even legendary figure Christiana Figueres is showing signs of doubt. So 10 years on from Paris, in a year that

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23:51

The collapse of America’s health data system; How...

The world, the universe and us ·

2025/10/31

Episode 329America’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

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29:20

How mRNA vaccines teach your body to kill cancer;...

The world, the universe and us ·

2025/10/24

Episode 328Not 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

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28:29

Neuroscience of reality; Quest for dark matter;...

The world, the universe and us ·

2025/10/20

Episode 327 A special episode recorded on October 18 at New Scientist Live in London, featuring experts in geoscience, dark matter and neuroscience. Anjana Khatwa is an Earth scientist and TV presenter. In her new book, The Whispers of Rock, she brings together Western scientific knowledge about the evolution of our Earth and indigenous knowledge and stories. She demonstrates this connection by exploring the volcanic formation of the Hawaiian islands, and the fascinating folklore attached to their

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