

Science Weekly
The Guardian
Twice a week, the Guardian brings you the latest science and environment news
Episodes
Mentioned books

Oct 30, 2025 • 21min
A Scottish tea mystery: a bag for life – episode three
Stuart Wilson, an investigator for Food Standards Scotland, reveals the shocking truths behind a massive tea fraud, while Richard Ross, a Scottish grower affected by the scam, shares his harrowing account. They discuss the fraudulent nature of tea marketed as Scottish, debunking the fake awards and dubious claims made by the con artist, Tam O'Brien. The podcast uncovers the fallout of the deception on local growers and concludes with a cautious optimism for the future of the legitimate Scottish tea industry.

14 snips
Oct 29, 2025 • 23min
A Scottish tea mystery: the list – episode two
In this intriguing exploration, Professor David Burson highlights the scientific methods used to authenticate tea origins, revealing how trace elements in soil can pinpoint where tea is grown. Richard Ross discusses the alarming discovery of misleading Scottish tea claims that shook the local growers' trust. Stuart Wilson uncovers the investigation into Tam O'Brien's alleged food fraud, detailing how his sourced plants from abroad contradicted his claims. Together, they weave a captivating tale of deceit and the power of science in uncovering the truth.

16 snips
Oct 28, 2025 • 22min
A Scottish tea mystery: green shoots – episode one
Tam O'Bran, a self-styled tea grower and entrepreneur, shares his bold dream of cultivating tea in Scotland on the Dalryrka estate. Nicola Davis investigates the intriguing discrepancies in his claims, from supplying luxury hotels with award-winning teas to the mysterious circumstances surrounding his methods. As local growers become intrigued and Tam's persona gains media attention, doubts arise about the authenticity of his success. With questions about tea’s growth conditions and the provenance of his products, the story unfolds into a captivating quest for the truth.

16 snips
Oct 23, 2025 • 15min
The ‘remarkable’ implant that can restore sight
Mahi Muqit, a leading retinal surgeon at Moorfields Eye Hospital, discusses an innovative electronic eye implant that may revolutionize vision restoration. He shares inspiring stories of patients regaining sight, including emotional reactions to seeing letters again. Mahi explains the technology behind the implant, how it interfaces with glasses and a camera, and its potential to change lives. He also explores future developments in vision-loss therapies, positioning this advancement alongside other emerging treatments.

18 snips
Oct 21, 2025 • 17min
The seed bank storing the planet’s future
In this enlightening conversation, Patrick Greenfield, a biodiversity reporter for The Guardian, shares insights from his visit to the Millennium Seed Bank. He discusses the adventurous global efforts to collect seeds and the intricate processes that ensure their survival. Greenfield highlights how these seeds aid in restoring endangered species, including a successful project revitalizing fire-ravaged landscapes in Australia. He also reflects on the passionate dedication of scientists working behind the scenes to safeguard our planet's plant biodiversity.

9 snips
Oct 16, 2025 • 20min
Why is ‘chronic’ lyme disease so controversial?
Prof. John Aucott, director of the Johns Hopkins Lyme Disease Research Center, discusses the complexities of Lyme disease, especially its long-term effects. He highlights the rise in cases due to climate change and explores the distinction between chronic Lyme and post-treatment Lyme syndrome. Patrick Barkham shares the story of his daughter Milly, her struggles with symptoms, and how celebrity accounts led to her diagnosis. The conversation sheds light on the diagnostic challenges and the need for further research in managing this controversial disease.

32 snips
Oct 14, 2025 • 16min
Traitor or faithful: how to spot a liar
Timothy Luke, a senior lecturer in applied psychology at the University of Gothenburg, dives into the intricacies of deception and lie detection. He reveals that common myths, like sweating and nervous ticks, lack scientific backing. Timothy discusses the average person's struggle with detecting lies and critiques the reliability of polygraphs. He also shares insights on how vague statements may indicate deceit and suggests evidence gathering as a trustworthy method for spotting liars. His practical advice? Approach judgments cautiously and focus on collecting clear evidence.

44 snips
Oct 8, 2025 • 21min
All the news and science from the 2025 Nobel prizes
This year's Nobel prizes showcase groundbreaking discoveries in science. Learn about regulatory T cells that safeguard our immune system and their potential in treating autoimmune diseases. Dive into macroscopic quantum tunneling, a crucial step for advancing quantum computing. Discover the innovative metal-organic frameworks inspired by diamond structures, which promise advancements in gas storage and pollution control. The future of technology and health is looking bright with these remarkable achievements!

51 snips
Oct 7, 2025 • 21min
The real science of weight loss with the US’s leading nutritional scientist
In a revealing discussion, Kevin Hall, a pioneer in nutritional science and former NIH scientist, shares insights on weight loss and the science behind appetite. He challenges common myths about dieting, emphasizing how our bodies resist weight changes and the limited role of exercise in initial weight loss. Hall also delves into the effects of ultra-processed foods, explaining their addictive nature and how they drive overeating. With a backdrop of his early retirement due to censorship, he advocates for informed dietary practices over simplistic solutions.

Oct 2, 2025 • 17min
Remembering primatologist Jane Goodall
Jon Watts, The Guardian's global environment editor, shares his firsthand experiences with the iconic primatologist Jane Goodall. He reflects on her unconventional beginnings, how she revolutionized primatology by building relationships with chimpanzees, and her crucial discoveries about their social complexity and tool use. Watts highlights Goodall's transition from researcher to global activist and her lasting influence on young people and conservation efforts. Her passion, patience, and humor made her a beloved figure whose legacy will inspire future generations.


