
Could we really live on Mars?
5 November 2024 - 21 minsSpace-settling enthusiasts have long had an eye on Mars, and now they have the backing of the world’s richest man. Elon Musk recently claimed that humans could be on the planet by 2030 and be living there in a self-sustaining city within 20 years. But is it really that simple? Madeleine Finlay heads to Imperial College London where Prof Sanjeev Gupta gives her a tour of the red planet, and meets Kelly Weinersmith who, along with her husband, Zach, recently won the Royal Society Trivedi science book prize for their book A City on Mars. She explains why life on Mars may not be the idyll some would have us believe. Help support our independent journalism at theguardian.com/sciencepod

Keto: what’s the science behind the diet?
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 while on it. Help support our independent journalism at theguardian.com/sciencepod
17 mins
1 April Finished

The rise and fall of DNA testing company 23andMe
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 in health and biotechnology. Help support our independent journalism at theguardian.com/sciencepod
21 mins
27 March Finished

Where do our early childhood memories go?
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 theguardian.com/sciencepod
18 mins
25 March Finished

What a dark energy discovery means for the fate of the universe
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. Help support our independent journalism at theguardian.com/sciencepod
16 mins
20 March Finished

A mysterious millionaire and the quest to live under the sea – podcast
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 periods living underwater. Help support our independent journalism at theguardian.com/sciencepod
16 mins
18 March Finished

Use it or lose it: how to sharpen your brain as you age
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 theguardian.com/sciencepod
14 mins
13 March Finished