Science Weekly

00:14:53

The incredible science of the sleeping brain

Science Weekly ·

2026/06/02

Humans have been wondering why we sleep for thousands of years. Is sleep’s purpose rest and relaxation, memory consolidation or maybe cognitive processing? In the last 15 years, scientists have discovered another possible explanation – waste disposal. In 2012 neuroscientist Maiken Nedergaard’s lab discovered that the brain has its own cleaning process, the glymphatic system, which clears away unhelpful proteins and metabolic byproducts, and only switches on at night. Since that groundbreaking

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00:17:07

Are robots nearing their ChatGPT moment?

Science Weekly ·

2026/05/28

Last month at Beijing’s half marathon, a robot named Lightning beat the human world record by nearly seven minutes. It’s the latest in a string of AI-powered milestones that have got people wondering whether robots are about to enter our everyday lives, just as chatbots have. And the country leading the charge is China, where the government has pledged to invest more than £100bn in robotics over the next 20 years. To find out how robots are already entering the workforce, and what needs to happen to

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00:14:25

Red-light masks: can they really slow ageing?

Science Weekly ·

2026/05/26

Home red-light therapy devices have exploded in popularity as masks, body wraps and mittens promise to reduce wrinkles, redness and even acne. But do the claims stack up, and what other benefits are scientists investigating? Ian Sample hears from his co-host, Madeleine Finlay, and the consultant dermatologist Dr Jonathan Kentley. Kentley explains how the potential benefits of red light were discovered, how it is thought to interact with collagen in our skin, and what science has to say about its

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00:42:35

Stateside with Kai and Carter: why the fight over...

Science Weekly ·

2026/05/23

The US supreme court has preserved nationwide access to mail-order abortion pills – for now. As Carter Sherman explains, the fight to protect this medication is far from over, as a nationwide, near-total abortion ban could be on the horizon. Carter speaks with Dr Angel Foster, co-founder of the Massachusetts Medication Abortion Access Project, who reveals how the legal battle over abortion pills has affected patients across the US – and what could happen next. Help support our independent journalism

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00:16:11

Can a name change transform PCOS outcomes for women?

Science Weekly ·

2026/05/21

After more than a decade of global consultation, polycystic ovary syndrome – which affects as many as one in eight women – has been renamed. The condition is caused by high levels of androgens, which can lead to symptoms such as excess hair, weight gain and irregular periods. To understand why campaigners wanted it renamed, and what its new name – polyendocrine metabolic ovarian syndrome (PMOS) – could mean for patients, Madeleine Finlay hears from the Guardian’s science correspondent, Nicola Davis,

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00:13:50

Ebola: how does it spread and can the outbreak be...

Science Weekly ·

2026/05/18

An outbreak of Ebola has emerged in the Democratic Republic of Congo and Uganda, leading to nearly 400 confirmed cases and more than 100 deaths. To find out how the outbreak might have begun, what authorities can do to contain it and why this outbreak is causing particular concern, Ian Sample hears from Daniela Manno, a clinical epidemiologist at the London School of Hygiene and Tropical Medicine. Help support our independent journalism at <a

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00:35:38

Stateside with Kai and Carter: Stacey Abrams on why...

Science Weekly ·

2026/05/16

The US supreme court dealt a devastating blow to the 1965 Voting Rights Act when it ruled in Louisiana v Callais in April that states cannot consider race in redistricting. Southern states from Tennessee to Alabama have rushed to erase majority-Black districts, sparking chaos for the midterm elections. Kai Wright talks to Stacey Abrams, a voting rights activist and former Georgia house minority leader, about the fallout from the decision, and why, despite it all, she still believes the way forward

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00:21:17

Hantavirus update, Pentagon’s UFO files, can art slow...

Science Weekly ·

2026/05/14

Madeleine Finlay sits down with co-host and science editor Ian Sample to discuss three eyecatching stories from the week, including an update on hantavirus. Also on the agenda is the Pentagon’s release of a tranche of never before seen documents relating to UFOs, and a study looking at the link between taking part in cultural activities and slower biological ageing. Help support our independent journalism at <a

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00:17:45

Strange trip: why Trump is backing psychedelics

Science Weekly ·

2026/05/12

Last month President Trump signed an executive order designed to fast track both research and access to psychedelic drugs as treatments for mental health illnesses. The most prominent in the order was ibogaine, a drug derived from the root bark of a West African shrub, that has shown some promise in relieving the long term effects of traumatic brain injury. Madeleine Finlay talks to journalist Mattha Busby about podcaster Joe Rogan’s role in the story, what else is behind the President’s interest in

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00:20:51

100 years on Earth: celebrating David Attenborough’s...

Science Weekly ·

2026/05/07

To celebrate Sir David Attenborough’s centenary, Madeleine Finlay catches up with natural history writer Patrick Barkham, who has met the celebrated presenter. They explore how the natural world has changed in the century that Attenborough has been on Earth, and how his programming has reflected his growing commitment to highlighting the devastating impacts of the climate crisis on nature and biodiversity. Help support our independent journalism at <a

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00:13:29

Hantavirus explained: how does it spread and who is...

Science Weekly ·

2026/05/05

Three people have died after an outbreak of hantavirus onboard a cruise ship travelling from Argentina to Cape Verde. The World Health Organization says a total of seven cases – two confirmed by laboratory testing and five suspected – have been identified on the cruise ship so far. It is also investigating whether rare human-to-human transmission of the virus could be behind the cases. Madeleine Finlay talks to Prof Jonathan Ball from Liverpool School of Tropical Medicine to find out where the virus

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00:14:40

‘Historic breakthrough’: could the fossil fuel era be...

Science Weekly ·

2026/05/05

The transition towards renewable energy received a boost last week when representatives from 57 countries met in Santa Marta, Colombia, for a world-first climate meeting aimed at bringing the fossil fuels era to an end. Madeleine Finlay hears from the Guardian’s global environment editor, Jon Watts, about how the landmark conference came about, who was missing, and whether the optimism can translate into real world action. Help support our independent journalism at <a

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00:19:34

Sub-two-hour marathon, spooky houses explained and...

Science Weekly ·

2026/04/30

Madeleine Finlay sits down with co-host and Guardian science editor Ian Sample to talk through three eye-catching stories from the week, including the news that the number of years people in the UK are spending in good health has declined compared with a decade ago. Also on the agenda is the science, tech and nutrition behind two runners at this weekend’s London marathon breaking the two-hour threshold, and an answer to why some old houses feel particularly spooky. Help support our independent

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00:17:50

What is a food intolerance, and how do you know if...

Science Weekly ·

2026/04/28

Social media is awash with content about food intolerances and the symptoms to look out for. But figuring out whether you actually have one, and what’s triggering it, is surprisingly difficult. One avenue people are gravitating towards is at-home testing. Madeleine Finlay sits down with health and lifestyle journalist Rebecca Seal to unpick the science behind these tests. Rebecca explains how they purport to work, how accurate they actually are, and how we can all investigate what we might be

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00:16:19

Muons, massive waves and restored sight: the winners...

Science Weekly ·

2026/04/23

Madeleine Finlay sits down with science editor Ian Sample to hear about some of the winners of the Breakthrough Prize, which held its ceremony in LA last weekend. Each prize is worth $3m and they’re awarded in physics, maths and life sciences. Madeleine and Ian hear from molecular biologist Jean Bennett, who shared a life sciences prize for her work developing the world’s first FDA-approved gene augmented therapy for sight loss. She explains how a chance encounter while dissecting a brain in medical

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00:15:50

Mythos: are fears over new AI model panic or PR?

Science Weekly ·

2026/04/21

Earlier this month the AI company Anthropic said it had created a model so powerful that, out of a sense of responsibility, it was not going to release it to the public. Anthropic says the model, Mythos Preview, excels at spotting and exploiting vulnerabilities in software, and could pose a severe risk to economies, public safety and national security. But is this the whole story? Some experts have expressed scepticism about the extent of the model’s capabilities. Ian Sample hears from Aisha Down, a

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00:20:45

The surprising value of boring chats, ‘super El Niño’...

Science Weekly ·

2026/04/16

Madeleine Finlay sits down with co-host and science editor Ian Sample to discuss three eye-catching stories from the week, including a review into the effectiveness of a new class of Alzheimer’s drug that was once hailed as a game-changer in slowing the progress of the disease. Also on the agenda is the news that the world could be heading for a ‘super El Niño’ this summer and a study exploring whether conversations about dull topics really are as boring as we expect them to be. Help support our

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00:16:19

Helium: the invisible gas that powers AI, and why...

Science Weekly ·

2026/04/14

Alongside the oil and gas stranded in the strait of Hormuz is another commodity vital to today’s economy: helium. It is a critical element in all kinds of areas from MRI machines to the Large Hadron Collider, and even deep-sea diving. It is also integral to the AI boom. And this isn’t the first time its fragile global supply chain has been threatened. So why is helium so useful, and what will happen if the shortage continues? Ian Sample hears from co-host Madeleine Finlay, and from Sophia Hayes,

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00:19:04

Everything you need to know about Artemis II so far

Science Weekly ·

2026/04/09

This week Artemis II’s four-astronaut crew broke Apollo 13’s distance record, becoming the humans to travel the farthest from Earth. Now on their way home, the team has experienced tech malfunctions, views like no other and moments of intense emotion, all in under 10 days. To find out about all the highs and lows of the mission, Madeleine Finlay hears from the Guardian’s science editor, Ian Sample. Help support our independent journalism at <a

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00:15:37

Can we eradicate a second human disease?

Science Weekly ·

2026/04/07

The number of human cases of guinea worm, a painful and debilitating tropical illness, fell to a record low of just 10 last year, according to the Carter Centre, the foundation set up by the late former US president Jimmy Carter. But despite years-long declines, it remains almost impossible to completely eradicate the parasite. Only one human illness has been entirely eradicated: smallpox. Why is it so difficult, and could guinea worm one day be the second? Ian Sample hears from co-host Madeleine

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