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Science Weekly

The Guardian

Twice a week, the Guardian brings you the latest science and environment news

science

All Episodes

00:21:22

Surviving 200 snake bites, decoding ancient scrolls...

Science Weekly ·

2025/05/08

Science correspondent Hannah Devlin joins Ian Sample to discuss three intriguing science stories from the week, from a global study that puts the UK third from bottom when it comes to flourishing, to a man who intentionally suffered more than 200 snake bites in the quest to find a universal antivenom and a breakthrough in the quest to understand the contents of the charred Herculaneum scrolls buried when Mount Vesuvius erupted. Help support our independent journalism at <a

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00:16:24

How old are we really? What a test can tell us about...

Science Weekly ·

2025/05/06

Direct to consumer tests that claim to tell us our biological – as opposed to chronological – age are getting a lot of attention, but what can they really tell us about our health? Science editor Ian Sample talks to Dr Brian H Chen, an epidemiologist at the California Pacific Medical Center Research Institute, who has conducted research into a variety of these tests called epigenetic clocks. He explains what exactly they are measuring and whether, once we have the results, there are any

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00:16:29

Why did Spain and Portugal go dark?

Science Weekly ·

2025/05/01

Authorities are still trying to understand what triggered the massive power outage that left the majority of the Iberian Peninsula without electricity on Monday. To understand what might have been at play, and whether there’s any truth to claims that renewable energy sources were to blame, Ian Sample hears from Guardian energy correspondent Jillian Ambrose. And Guardian European community affairs correspondent Ashifa Kassam explains what it was like to experience the blackout and how people reacted

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00:18:27

Why did Just Stop Oil just stop?

Science Weekly ·

2025/04/29

Just Stop Oil, the climate activism group behind motorway blockades, petrol station disruption and tomato soup attacks on major artworks, has disbanded after staging a final action in London this weekend. To find out why the group has decided to hang up the famous orange high-vis, Madeleine Finlay hears from our environment correspondent Damien Gayle who has been covering Just Stop Oil since its inception. He explains how policy wins and policing crackdowns combined to bring the movement to a close,

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00:20:43

Evidence of alien life, a clue about the rise of...

Science Weekly ·

2025/04/24

Madeleine Finlay and Ian Sample discuss three intriguing science stories from the week. From a hint at alien life on a distant planet to a clue in the search for answers over why colon cancer rates are rising in the under 50s, and news from scientists who claim to have found a colour no one has seen before. Help support our independent journalism at <a href="https://www.theguardian.com/sciencepod">theguardian.com/sciencepod</a>

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00:16:26

Is ‘de-extinction’ really possible?

Science Weekly ·

2025/04/22

The American biotech company Colossal Biosciences recently made headlines around the world with claims it had resurrected the dire wolf, an animal that went extinct at the end of the last ice age. But does what the company has done amount to ‘de-extinction’ or should we instead think of these pups as genetically modified versions of the grey wolves that exist today? Science correspondent Nicola Davis tells Madeleine Finlay about the process that created these wolves, how other companies are joining

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00:17:53

RFK Jr’s mixed messages on vaccines

Science Weekly ·

2025/04/17

As a measles outbreak expands across the US, comments by health secretary Robert F Kennedy Jr have come under scrutiny. Kennedy has said that the best way to prevent measles is to get vaccinated – but he has also caused alarm among paediatricians, vaccine experts and lawmakers by promoting vitamin A and nutrition as treatments for measles and questioning the safety testing of the MMR vaccine. He also recently announced a US-led scientific effort to establish the cause of what he terms the ‘autism

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00:19:43

What 40 years as Observer science editor has taught...

Science Weekly ·

2025/04/15

Robin McKie reflects on his 40 years as science editor for the Observer and tells Madeleine Finlay about the game-changing discoveries and scientific controversies that he’s reported on during that time. He describes how the discovery of the structure of DNA revolutionised science, what he learned about misinformation from the HIV/AIDS pandemic and why cold fusion and the millennium bug failed to live up to their hype.. Help support our independent journalism at <a

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00:15:54

Streams of medicines: how Switzerland cleaned up its act

Science Weekly ·

2025/04/10

Switzerland is leading the world in purifying its water of micropollutants, a concoction of chemicals often found in bodies of water that look crystal clear. They include common medicines like antidepressants and antihistamines, but have unknown and potentially damaging consequences for human and ecosystem health. In the second of a two-part series, Phoebe Weston travels to Geneva to find out how the country has transformed its rivers from sewage-filled health hazards to pristine swimming spots. She

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00:15:55

Streams of medicines: what’s hiding in the UK’s...

Science Weekly ·

2025/04/08

The UK is known for its national parks: areas of outstanding natural beauty with rolling hills and crystal-clear streams and lakes. But research has shown that England’s most protected rivers are full of pharmaceuticals. In episode one of a two-part series, biodiversity reporter Phoebe Weston tells Madeleine Finlay about the problem of chemical pollution in our waterways, and how it could be contributing to what the World Health Organization has described as ‘the silent pandemic’ – antimicrobial

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00:18:16

‘Parasites should get more fame’: the nominees for...

Science Weekly ·

2025/04/03

Invertebrates don’t get the attention lavished on cute pets or apex predators, but these unsung heroes are some of the most impressive and resilient creatures on the planet. So when the Guardian opened its poll to find the world’s finest invertebrate, readers got in touch in their droves. A dazzling array of nominations have flown in for insects, arachnids, snails, crustaceans, corals and many more obscure creatures. Patrick Barkham tells Madeleine Finlay why these tiny creatures deserve more

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00:17:16

Keto: what’s the science behind the diet?

Science Weekly ·

2025/04/01

While other diet fads come and go, the ultra low carbohydrate Keto diet seems to endure. But as scientists begin to understand how the diet works, more is also being discovered about its risks. To find out more, Madeleine Finlay speaks to Javier Gonzalez, professor in the department of health at the University of Bath, with a special interest in personal nutrition. He explains how the diet works, what it could be doing to our bodies and what could really be behind the weight loss people experience

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00:21:49

The rise and fall of DNA testing company 23andMe

Science Weekly ·

2025/03/27

The genetic testing firm 23andMe has filed for bankruptcy, another twist in the story of a company that promised a pioneering approach to precision health. Now users are scrambling to delete their personal data, with the future ownership of the firm uncertain. To understand the highs and lows of 23andMe’s journey, Madeleine Finlay hears from the Guardian US tech reporter and editor Johana Bhuiyan, and from Timothy Caulfield, a professor of law at the University of Alberta, who has a special interest

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00:18:37

Where do our early childhood memories go?

Science Weekly ·

2025/03/25

It’s a mystery that has long puzzled researchers. Why can’t we remember our early childhood experiences? Freud called the phenomenon infantile amnesia, and for many years scientists have wondered whether it’s a result of failure to create memories or just a failure to retrieve them. Now new research appears to point to an answer. To find out more, Ian Sample talks to Nick Turk-Browne, a professor of psychology at Yale University.. Help support our independent journalism at <a

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00:16:08

What a dark energy discovery means for the fate of...

Science Weekly ·

2025/03/20

Dark energy, the mysterious force powering the expansion of the universe, appears to be weakening over time, according to a major cosmological survey that has thrown the laws of modern physics into doubt. Ian Sample tells Madeleine Finlay how this new finding could shed light on the ultimate fate of the cosmos, and Saul Perlmutter, who won a Nobel prize for his work proving the universe is expanding, describes how the new development could upend assumptions about how this mysterious force operates

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00:16:02

A mysterious millionaire and the quest to live under...

Science Weekly ·

2025/03/18

Before billionaires dreamed of setting up communities on Mars, the ocean was seen as the next frontier in human habitation. Reviving this dream is Deep, a project backed by an anonymous millionaire to the tune of more than £100m that aims to establish a ‘permanent human presence’ under the sea from 2027. Guardian Seascape editor Lisa Bachelor visited the project just outside Chepstow on the Welsh border, and tells Madeleine Finlay what scientists hope to learn about the ocean by spending extended

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00:14:03

Use it or lose it: how to sharpen your brain as you age

Science Weekly ·

2025/03/13

Many of us believe that cognitive decline is an inevitable part of ageing, but a new study looking at how our skills change with age challenges that idea. Ian Sample talks to Ludger Wößmann, a professor of economics at the University of Munich and one of the study’s authors, to find out how the team delved into the data to come to their conclusions, and what they discovered about how we can all maintain our faculties for as long as possible. Help support our independent journalism at <a

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00:13:52

Mars-a-lago? Did the red planet once have sandy beaches?

Science Weekly ·

2025/03/11

The Mars we know now is arid and dusty, with punishing radiation levels. But, as science correspondent Nicola Davis tells Madeleine Finlay, two new studies add weight to the idea that billions of years ago the red planet was a much wetter place. Nicola explains why researchers now think it was once home to sandy beaches, what a study looking into the type of rust on the planet has revealed about its damp past, and what all this might tell us about the former habitability of Mars. Help support our

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00:22:46

Moon missions, Musk v scientists, sperm and longevity

Science Weekly ·

2025/03/06

Madeleine Finlay and Ian Sample discuss three intriguing science stories from the week. From two private moon landings to the controversy over Elon Musk’s continued membership of the Royal Society, and a new study making a link between men’s health and their sperm quality. Help support our independent journalism at <a href="https://www.theguardian.com/sciencepod">theguardian.com/sciencepod</a>

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00:14:38

Why it’s boom time for beavers in England

Science Weekly ·

2025/03/04

Beavers were once abundant in the UK, but hunting them for their fur, meat and scent oil drove them to extinction. Now they’re back, with the news that the release of beavers into English waterways is to be allowed for the first time in centuries. To understand why this is seen as a huge win for the environment, Madeleine Finlay hears from the Guardian’s environment reporter Helena Horton.. Help support our independent journalism at <a

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