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Science Weekly

by The Guardian

NewElizabeth Holmes is back in the spotlight: why can’t we look away?October 22, 2026 · 17 min

Episodes: 296
Released: several times a week
Latest episode: Oct 22, 2026

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About the podcast

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

Episodes 296

Elizabeth Holmes is back in the spotlight: why can’t we look away?
October 22, 202617 min
You Can See Everything, a documentary about the disgraced health tech company founder Elizabeth Holmes, has enjoyed a record-breaking opening in the US. It is a testament to how fascinated we remain by the …
Show notes
You Can See Everything, a documentary about the disgraced health tech company founder Elizabeth Holmes, has enjoyed a record-breaking opening in the US. It is a testament to how fascinated we remain by the convicted fraudster, but what is behind the enduring appeal? US technology editor Blake Montgomery tells Madeleine Finlay why Holmes continues to fascinate us, and reflects on whether the Theranos scandal has had a permanent impact on Silicon Valley. Help support our independent journalism at theguardian.com/sciencepod
‘These risks are real’: the threat of AI bioweapons
October 20, 202616 min
In his annual speech on threats to the nation, Sir Ken McCallum, the head of the UK’s intelligence service, MI5, warned that AI had the potential to ‘change the stakes’ on existing and even new bioweapons. To …
Show notes
In his annual speech on threats to the nation, Sir Ken McCallum, the head of the UK’s intelligence service, MI5, warned that AI had the potential to ‘change the stakes’ on existing and even new bioweapons. To find out why, and how, Ian Sample speaks to Dr Tom Inglesby, director of the Johns Hopkins Center for Health Security and the Bloomberg School of Public Health. He explains what has governments so worried and what measures could be put in place to reduce the risks. Help support our independent journalism at theguardian.com/sciencepod
Is your boss watching you? The rise of AI surveillance at work
October 15, 202618 min
Workers have always been monitored by their bosses, first through output targets, and then via computer software labelled ‘bossware’. But AI is transforming the capabilities of these systems, processing huge …
Show notes
Workers have always been monitored by their bosses, first through output targets, and then via computer software labelled ‘bossware’. But AI is transforming the capabilities of these systems, processing huge volumes of data to provide minute-by-minute accounts of activity, and productivity. To find out more, Ian Sample hears from UK technology editor Robert Booth. He explains which sectors are adopting this approach, why they are doing it, and how it could end up being counterproductive.. Help support our independent journalism at theguardian.com/sciencepod
The surprising psychology of morbid curiosity
October 13, 202617 min
US defence secretary Pete Hegseth’s plan to livestream the execution of Nidal Malik Hasan has incurred condemnation from human rights groups and politicians on all sides. But according to Coltan Scrivner, an …
Show notes
US defence secretary Pete Hegseth’s plan to livestream the execution of Nidal Malik Hasan has incurred condemnation from human rights groups and politicians on all sides. But according to Coltan Scrivner, an author and psychologist at Arizona State University and expert on morbid curiosity, people are still likely to watch in large numbers. He explains why we are drawn to dark and disturbing content, and Madeleine Finlay tells Ian Sample how consuming this kind of material can harm observers’ mental health. Help support our independent journalism at theguardian.com/sciencepod
All the news and science from the 2026 Nobel prizes
October 7, 202623 min
This year’s Nobel prizes in chemistry, physics and physiology or medicine have celebrated work that has been used to develop countless drugs and transform modern medicine, allowed physicists to observe one of …
Show notes
This year’s Nobel prizes in chemistry, physics and physiology or medicine have celebrated work that has been used to develop countless drugs and transform modern medicine, allowed physicists to observe one of the most mysterious particles, and provided a tool that could act as an on/off switch for brain cells. To find out more, Madeleine Finlay talks to our science editor, Ian Sample, and correspondents Nicola Davis and Linda Geddes. Help support our independent journalism at theguardian.com/sciencepod
Today in Focus: Should we be worried about a plague outbreak?
October 6, 202614 min
Several hospitals in eastern Russia are under quarantine after a lab worker fell ill at a plague research centre following a reported accident and died. Russia’s health watchdog has said Darya Shipilova, 28 …
Show notes
Several hospitals in eastern Russia are under quarantine after a lab worker fell ill at a plague research centre following a reported accident and died. Russia’s health watchdog has said Darya Shipilova, 28, died of ‘pneumonia of unknown aetiology’, but there is speculation about a possible plague infection. Science Weekly co-host Madeleine Finlay tells Lucy Hough, the host of Today in Focus: The Latest, how concerned we should be. Help support our independent journalism at theguardian.com/sciencepod
Narcolepsy: why you’ve been thinking about it all wrong
October 6, 202617 min
The sleep disorder has been the butt of jokes and a comedic plot point, but the reality of living with narcolepsy is anything but funny. Things could be about to change for people with the condition though …
Show notes
The sleep disorder has been the butt of jokes and a comedic plot point, but the reality of living with narcolepsy is anything but funny. Things could be about to change for people with the condition though, after the US Food and Drug Administration (FDA) approved the first ever drug to treat narcolepsy itself, rather than just its symptoms. Madeleine Finlay tells Ian Sample how the scientific breakthrough came about, and Julie Flygare, who has narcolepsy and founded the non-profit Project Sleep, explains what it is like to live with the condition and how the drug could be gamechanger. Help support our independent journalism at theguardian.com/sciencepod
The incredible science of memory manipulation
October 1, 202621 min
Madeleine Finlay hears from Steve Ramirez, an associate professor of psychological and brain sciences at Boston University, whose book How to Change a Memory was shortlisted for this year’s Royal Society …
Show notes
Madeleine Finlay hears from Steve Ramirez, an associate professor of psychological and brain sciences at Boston University, whose book How to Change a Memory was shortlisted for this year’s Royal Society Trivedi science book prize. He explains how scientists have been able to locate memories in the brains of rodents, trigger them artificially and even remove them, and reveals what the practical applications of this science could one day be for humans.. Help support our independent journalism at theguardian.com/sciencepod
Are household cleaning products damaging our health?
September 29, 202618 min
Our use of cleaning products has increased since the pandemic, but do we understand what they could be doing to our health? The journalist Rebecca Seal recently wrote for the Guardian about the potential …
Show notes
Our use of cleaning products has increased since the pandemic, but do we understand what they could be doing to our health? The journalist Rebecca Seal recently wrote for the Guardian about the potential impacts of the many chemicals we now use in our homes. She tells Madeleine Finlay how social media has also played a role in transforming our cleaning habits, why the impact of indoor air pollution is so hard to study, and what the current evidence is that cleaning products may be causing harm. Help support our independent journalism at theguardian.com/sciencepod
Are baby girls more sociable? Super El Niño, meningitis outbreak explained
September 24, 202622 min
Madeleine Finlay sits down with her co-host and Guardian science editor, Ian Sample, to discuss three science stories from the week, including a study that offers a clue in the age-old debate about whether sex …
Show notes
Madeleine Finlay sits down with her co-host and Guardian science editor, Ian Sample, to discuss three science stories from the week, including a study that offers a clue in the age-old debate about whether sex differences are present from birth or a product of socialisation. Also on the agenda is the super El Niño, which is predicted to lead to 450,000 deaths in the next six months, and an answer to why the UK’s meningitis outbreak earlier this year was so big.. Help support our independent journalism at theguardian.com/sciencepod
From paleo to intermittent fasting: are any diets actually good for us?
September 22, 202617 min
As diet trends proliferate on social media, it can be hard to work out which are backed by science and which should be ignored. From paleo to keto, raw food to intermittent fasting, each attracts a tribe of …
Show notes
As diet trends proliferate on social media, it can be hard to work out which are backed by science and which should be ignored. From paleo to keto, raw food to intermittent fasting, each attracts a tribe of ardent followers. Now Daniel Lieberman, professor of biological sciences at Harvard University, has written a book to try to cut through the noise. In Fed Up, he uses his background as an evolutionary anthropologist to scrutinise the evidence, turning himself into a guinea pig in the process and trying various diets. In this podcast, he tells Ian Sample which one has remained part of his routine. Help support our independent journalism at theguardian.com/sciencepod
The week that changed maths for ever
September 17, 202616 min
In early September, OpenAI announced it had solved a major mathematics problem that has stumped humans for nearly a century. The news left mathematicians reeling, and many expressed concern over what will be …
Show notes
In early September, OpenAI announced it had solved a major mathematics problem that has stumped humans for nearly a century. The news left mathematicians reeling, and many expressed concern over what will be left for humans as AI becomes ever more adept at unravelling complex problems. Now 25 recipients of the Fields medal – often called the Nobel prize for maths – have signed an open letter expressing their fears of a ‘severe misalignment’ between AI companies and their field. To find out how AI is likely to upend maths – and how mathematicians might respond – Ian Sample speaks to Colva Roney-Dougal, professor of pure mathematics at the University of St Andrews. Help support our independent journalism at theguardian.com/sciencepod
Is collagen all hype?
September 15, 202619 min
Collagen powders, gummies and pills have boomed in popularity in recent years boosted by claims that they smooth wrinkles, promote glossy hair and help with joint pain. Amid the noise it can be hard to figure …
Show notes
Collagen powders, gummies and pills have boomed in popularity in recent years boosted by claims that they smooth wrinkles, promote glossy hair and help with joint pain. Amid the noise it can be hard to figure out whether there’s any actual science behind the promise of looking younger for longer. Luckily Dr Xand van Tulleken has spent the past three years writing Make me well: a quest to understand the confusing world of wellness, and his chapter on collagen dives deep into the evidence. He tells Madeleine Finlay what collagen does in the body, how we can get it without splashing out on expensive supplements, and why getting to the truth behind wellness claims can be so hard. Help support our independent journalism at theguardian.com/sciencepod
Live episode: how AI is reshaping our minds
September 13, 20261 h 23 min
In this episode of Science Weekly, recorded in front of an audience at the London podcast festival on 3 September, Ian Sample hears from Michael Safi, the host of the Guardian’s chart-topping podcast about …
Show notes
In this episode of Science Weekly, recorded in front of an audience at the London podcast festival on 3 September, Ian Sample hears from Michael Safi, the host of the Guardian’s chart-topping podcast about artificial intelligence, Black Box. In series two, Black Box: the chatbots, Michael meets people who have become convinced they have made scientific breakthroughs, cured diseases or invented new technologies using AI chatbots. Ian, Michael and Science Weekly’s co-host Madeleine Finlay explore the phenomenon labelled ‘AI psychosis’ and ask what it reveals about a technology now used by more than a billion people. Help support our independent journalism at theguardian.com/sciencepod
‘One of the biggest discoveries in science’: have scientists found dark matter?
September 10, 202617 min
For decades physicists have been puzzling over the enigma of dark matter. We think it makes up 85% of the matter in the universe, but the mysterious substance cannot be seen or detected, and we know about it …
Show notes
For decades physicists have been puzzling over the enigma of dark matter. We think it makes up 85% of the matter in the universe, but the mysterious substance cannot be seen or detected, and we know about it mainly through observations of the gravitational effects it has on other things. But now scientists believe they may be a step closer to detecting it. Science editor Ian Sample explains to Madeleine Finlay why, if confirmed, the finding could completely transform our understanding of the universe. And Dr Samuel Eriksen, senior research associate at the University of Bristol, and first author of the research paper, explains how the finding has been received in the physics community. Help support our independent journalism at theguardian.com/sciencepod
Are rich people really worse behaved? Here’s the science
September 8, 202618 min
Who’s more likely to steal sweets from a child? According to science, it’s the rich. A study seemingly confirming our suspicions about the moral behaviour of the wealthy was one of the winners of the 2026 Ig …
Show notes
Who’s more likely to steal sweets from a child? According to science, it’s the rich. A study seemingly confirming our suspicions about the moral behaviour of the wealthy was one of the winners of the 2026 Ig Nobel prizes, which honour research that makes you laugh and then think. Science editor Ian Sample tells Madeleine Finlay what the researchers think could be behind the phenomenon, and they explore some of the other awards, including one for a surprising quality we look for in our friends and another for a biomechanical definition of kissing. Help support our independent journalism at theguardian.com/sciencepod
Introducing Black Box: The Chatbots
September 6, 202640 min
From the Guardian Investigates team: Across the world, hundreds of people have come to believe they have made extraordinary scientific discoveries with AI chatbots such as ChatGPT, Claude and Gemini. Others say …
Show notes
From the Guardian Investigates team: Across the world, hundreds of people have come to believe they have made extraordinary scientific discoveries with AI chatbots such as ChatGPT, Claude and Gemini. Others say their AI has ‘awakened’ or is leading them to a higher spiritual realm. The Guardian journalist Michael Safi begins investigating a phenomenon labelled ‘AI psychosis’, travelling to the US to meet two people who have been on weird journeys with their chatbots. Help support our independent journalism at theguardian.com/sciencepod
There’s a quick way to slow climate change. Why isn’t everyone doing it?
September 3, 202614 min
Methane is a potent greenhouse gas that traps more than 80 times as much heat than carbon dioxide over a 20-year period and causes 25% of global heating today. We definitely don’t want this gas spewing …
Show notes
Methane is a potent greenhouse gas that traps more than 80 times as much heat than carbon dioxide over a 20-year period and causes 25% of global heating today. We definitely don’t want this gas spewing needlessly into the atmosphere, but in 2023 that’s exactly what environment editor Damian Carrington found was happening when he reported on 1,000 super-emitting methane leaks across the globe. Now Turkmenistan, the worst country for mega-leaks, has begun to plug them. Damian tells Madeleine Finlay why some experts call stopping leaks the climate ‘emergency brake’ and reveals which countries are still failing to act. Help support our independent journalism at theguardian.com/sciencepod
Could humans ever communicate with whales?
September 1, 202617 min
Ever since the earliest known recording of whale song was made in 1949, researchers have been captivated by the wails, rumbles, clicks, grunts and squeals of their communication. As technology improves …
Show notes
Ever since the earliest known recording of whale song was made in 1949, researchers have been captivated by the wails, rumbles, clicks, grunts and squeals of their communication. As technology improves, scientists are decoding the intricate patterns that make different species’ vocalisations distinctive. Madeleine Finlay hears from Emma Bryce, a journalist who has spent months investigating human efforts to understand whale song. She explains how this knowledge could help us better protect whales from human-made harms. Credits: 1. Copyright 1978 National Geographic Society and 1977 Capitol Records, Inc. Commentary by Dr Roger Payne 2. Valeria Vergara/Raincoast Conservation Foundation 3. Footage courtesy of Raincoast Conservation Foundation - Obtained for research under SARA permit XMMS 4 2026 4. Video by Amanda Cotton/Project CETI 5. Footage courtesy of Valeria Vergara and GREMM. Obtained for research under SARA permits QUE-MM02-2016 and QUE-LEP-001-2018 6. Project CETI 7. Project CETI. Help support our independent journalism at theguardian.com/sciencepod
Everyone hates datacentres. Do we really need them?
August 27, 202617 min
AI companies have promised us world-shifting technology. But there’s a cost: loud, unsightly datacentres that drain environmental resources. As the government pushes their rapid growth, can local communities do …
Show notes
AI companies have promised us world-shifting technology. But there’s a cost: loud, unsightly datacentres that drain environmental resources. As the government pushes their rapid growth, can local communities do anything to push back? Madeleine Finlay speaks to the Guardian’s global technology reporter Aisha Down about the backlash to datacentres across the UK and around the world. Help support our independent journalism at theguardian.com/sciencepod
Creatine: is there truth behind the hype?
August 25, 202616 min
Creatine has become the go-to supplement for anyone wanting to give their fitness a boost and build muscle. It’s even made it out of the gym, with influencers touting its cognitive benefits. But what’s the …
Show notes
Creatine has become the go-to supplement for anyone wanting to give their fitness a boost and build muscle. It’s even made it out of the gym, with influencers touting its cognitive benefits. But what’s the science behind creatine, and does the evidence stack up? Madeleine Finlay hears from science editor Ian Sample and Dr Justin Roberts, professor of nutritional physiology at Anglia Ruskin University. Help support our independent journalism at theguardian.com/sciencepod
It’s finally raining. Will it be enough to end the drought?
August 20, 202616 min
After a summer that has seen England and Wales experience the driest July since records began, rain is finally on the horizon. But with reservoirs at ‘exceptionally low’ levels, will there be enough rain to …
Show notes
After a summer that has seen England and Wales experience the driest July since records began, rain is finally on the horizon. But with reservoirs at ‘exceptionally low’ levels, will there be enough rain to replenish stocks? Madeleine Finlay hears from Dr Anna Murgatroyd, a lecturer in hydrology at Newcastle University, about how much rain we need to see us through next summer, why we’re now at increased risk of floods, and what we can all be doing to take better care of our water supplies. Help support our independent journalism at theguardian.com/sciencepod
The ultra rich are collecting fossils, and that’s bad for science
August 18, 202615 min
One of the UK’s best fossil collections has been sold overseas in what experts have called a loss to the nation. The collection, which is now on display at the Natural History Museum in Abu Dhabi, was gathered …
Show notes
One of the UK’s best fossil collections has been sold overseas in what experts have called a loss to the nation. The collection, which is now on display at the Natural History Museum in Abu Dhabi, was gathered on Dorset’s Jurassic Coast. As dinosaur fossils sell to private collectors for increasingly large sums, scientists are worried that domestic museums are being priced out of the market, and in turn scientists are missing out on the opportunity to make new observations. To find out how fossils became big business and what it could mean for research, Madeleine Finlay hears from science correspondent Nicola Davis. Help support our independent journalism at theguardian.com/sciencepod
The immortal jellyfish and other mindblowing invertebrates
August 13, 202615 min
Each year the Guardian runs a competition to find the invertebrate of the year. To find out more about the 2026 nominees science editor Ian Sample hears from climate reporter Petra Stock, environment reporter …
Show notes
Each year the Guardian runs a competition to find the invertebrate of the year. To find out more about the 2026 nominees science editor Ian Sample hears from climate reporter Petra Stock, environment reporter Oliver Milman and Science Weekly co-host Madeleine Finlay. They each nominate an incredible invertebrate that you might never have heard of, and argue why their choice should be crowned the winner. Vote for your favourite now and the winner will be crowned on 17 August. Help support our independent journalism at theguardian.com/sciencepod
We’re reading less. And it’s making us stupid
August 11, 202620 min
Books have never been trendier, but studies show that as more and more things compete for our frazzled attention spans, we’re reading less and less. This is a problem because reading has a wealth of cognitive …
Show notes
Books have never been trendier, but studies show that as more and more things compete for our frazzled attention spans, we’re reading less and less. This is a problem because reading has a wealth of cognitive benefits that we’re in danger of missing out on. To find out why declining literacy could affect everything from memory to IQ, Madeleine Finlay speaks to the Guardian’s science editor, Ian Sample. She also hears from Prof Falk Huettig, an experimental psychologist at the Max Planck Institute for Psycholinguistics and author of The Perks of Being a Bookworm. Help support our independent journalism at theguardian.com/sciencepod
Four types of thinker, the cyclosporiasis outbreak, and the UK’s biggest telescope threatened
August 6, 202622 min
Madeleine Finlay is joined by Ian Sample, Guardian science editor, to discuss three eye-catching science stories including an investigation that has identified four distinct types of thinker. Also on the agenda …
Show notes
Madeleine Finlay is joined by Ian Sample, Guardian science editor, to discuss three eye-catching science stories including an investigation that has identified four distinct types of thinker. Also on the agenda is the unprecedented cyclosporiasis outbreak in the US which has now been linked to two fatalities, and the funding cuts that threaten the iconic Jodrell Bank world heritage site, home to the Lovell telescope. Help support our independent journalism at theguardian.com/sciencepod
The fight to save a historic English landscape
August 4, 202617 min
Madeleine Finlay travels to the Rothbury estate in Northumberland, in north-east England. It’s a piece of land that has been in the same family for 700 years, but now it has been put up for sale and the UK’s …
Show notes
Madeleine Finlay travels to the Rothbury estate in Northumberland, in north-east England. It’s a piece of land that has been in the same family for 700 years, but now it has been put up for sale and the UK’s Wildlife Trusts are trying to raise £30m to secure it intact. To find out what makes the area so special, Madeleine speaks to Katy Barke, the head of nature recovery for Northumberland Wildlife Trust. She also hears from Sam Turner, a professor of archaeology at Newcastle University, who is trying to work out how the land has been used across the centuries. This work will inform the strategy for nature recovery on the site. And Rosie Pearce, a farm liaison officer, explains how the project could bring more wildlife-friendly farming practices to the estate. Help support our independent journalism at theguardian.com/sciencepod
Revisited: Saunas and cold plunges, where does the evidence stand?
July 30, 202616 min
Saunas and cold plunge pools are popping up everywhere in the UK, bringing fiery heat and icy cold to a beach, city farm or park near you. Their users will be ready with all the reasons why it’s good for both …
Show notes
Saunas and cold plunge pools are popping up everywhere in the UK, bringing fiery heat and icy cold to a beach, city farm or park near you. Their users will be ready with all the reasons why it’s good for both the mind and the body. But what’s the evidence for the benefits of sauna and cold plunge? In this episode from April, Madeleine Finlay hears from Ian Sample and Dr Heather Massey, associate professor at the University of Portsmouth’s extreme environments laboratory. Help support our independent journalism at theguardian.com/sciencepod
Revisited: The surprising science of dreams and nightmares
July 28, 202622 min
In this episode from January 2026, Ian Sample puts listeners’ questions about dreams and nightmares to Dr Michelle Carr, the director of the Dream Engineering Laboratory in Montreal’s Centre for Advanced …
Show notes
In this episode from January 2026, Ian Sample puts listeners’ questions about dreams and nightmares to Dr Michelle Carr, the director of the Dream Engineering Laboratory in Montreal’s Centre for Advanced Research in Sleep Medicine, and the author of the book Into the Dream Lab. They look at why we dream, what we can learn by examining our dreams, and what we can do when dreams turn into nightmares. Carr gives her top tips for taking charge of our dreams and trying to influence their content. Help support our independent journalism at theguardian.com/sciencepod
Revisited: A Scottish tea mystery, episode three – a bag for life
July 23, 202620 min
Science correspondent Nicola Davis investigates the strange story of Tam O’Braan and his attempts to grow tea in Scotland. In episode three of this mini-series first broadcast in October 2025, all of O’Braan’s …
Show notes
Science correspondent Nicola Davis investigates the strange story of Tam O’Braan and his attempts to grow tea in Scotland. In episode three of this mini-series first broadcast in October 2025, all of O’Braan’s lies come to a head and it is revealed where he was sourcing the tea being supplied to hotels and shops. At trial, O’Braan takes the stand and the Scottish growers finally get some answers. But what remains today of the Scottish tea industry that O’Braan instigated?. Help support our independent journalism at theguardian.com/sciencepod