logo
episode-header-image
Aug 7
28m 14s

How can we reduce the impact of plastic ...

Bbc Radio 4
About this episode

Next month world leaders will again gather to focus on dealing with our global plastic problem. So this week we’re looking for solutions. Marnie Chesterton hears from Professor of Sustainable Chemical Engineering at the University of Sheffield, Rachael Rothman on how we can engineer safer, more environmentally friendly plastics.

And at the other end of the plastic spectrum, she hears about the clean up operation after the world’s biggest ocean spill of nurdles – tiny plastic pellets which are used to make plastic products. Investigative environmental journalist Leana Hosea brings the results of her investigation into the clean up after the X-Press Pearl container ship caught fire and sank 4 years ago.

Mark Miodownik, University College London Professor of Materials & Society returns to the studio with the results of a citizen science project to try to get more data on potty training. It aims to encourage parents to get toddlers out of nappies earlier.

And Penny Sarchet, managing editor at New Scientist brings her pick of this week’s newest scientific discoveries.

Presenter: Marnie Chesterton Producers: Clare Salisbury and Dan Welsh Editor: Martin Smith Production Co-ordinator: Jana Bennett-Holesworth

Up next
Oct 9
Could we have evidence of life on Mars?
News broke this week that rocks picked up by NASA’s Perseverance rover on Mars may have found chemical signatures left by living organisms. With the search for life on the red planet capturing our imaginations for decades, Victoria Gill is joined by science journalist Jonathan Am ... Show More
30m 9s
Oct 2
What does caffeine do to our bodies?
Sweet, caffeinated energy drinks are in the headlines again as the UK Government says it wants to ban under 16s from buying them. Some can contain the equivalent caffeine as 2 to 4 espressos. James Betts, Professor of Metabolic Physiology at the University of Bath, explains the s ... Show More
28m 21s
Sep 25
Does warm weather mean more rats in UK towns and cities?
Summer heatwaves and missed bin collections have created panic in the press that rat numbers in the UK are increasing. We ask Steve Belmain, Professor of Ecology at the Natural Resources Institute at the University of Greenwich for the science. This summer Wales became the first ... Show More
32m 27s
Recommended Episodes
Jun 2025
How to Fight Bird Flu If It Becomes the Next Human Pandemic (Part 3)
Creating a bird flu vaccine requires several layers of bioprotective clothing and typically a whole lot of eggs. H5N1 avian influenza infections have gone from flocks of chickens to herds of cattle and humans. Scientists at the Texas Biomedical Research Institute are taking their ... Show More
32m 51s
May 2025
The War Keeps Raging Against Science
Strange things have been happening to science in the US. An executive order is freezing research, a website with once scientific information now looks kinda like it's advertising a reality show … even milkshakes have been caught in the fray. Milkshakes! On top of this, research p ... Show More
43m 15s
May 2025
Do Mitochondria Talk to Each Other? A New Look at the Cell’s Powerhouse
Mitochondria are known as the powerhouse of the cell—but new research suggests they might be far more complex. Columbia University’s Martin Picard joins Scientific American’s Rachel Feltman to explore how these tiny organelles could be communicating and what that might mean for e ... Show More
27m 4s
Jan 2025
Combatting Climate Anxiety through Community Science
It’s easy to feel overwhelmed with the news these days and to fear for the future. What if you could interrupt doomscrolling and contribute to conservation at the same time? That’s the idea behind programs like Adventure Scientists, eBird and iNaturalist. Guest Gregg Treinish, fo ... Show More
14m 34s
Aug 5
Summer picks: what is ‘mirror life’ and why are scientists sounding the alarm?
Recently, a group of world-leading scientists called for a halt on research to create ‘mirror life’ microbes amid concerns that the synthetic organisms would present an ‘unprecedented risk’ to life on Earth. Ian Sample tells Madeleine Finlay about why this work initially seemed e ... Show More
17m 33s
Aug 24
Nick Spencer, "The Landscapes of Science and Religion: What Are We Disagreeing About?" (Oxford UP, 2025)
The relationship between science and religion has long been a heated debate and is becoming an ever more popular topic. The scientific capacity to manipulate and change humans and their environment through genetic engineering, life extension, and AI is going to take a huge leap f ... Show More
38m 48s
Sep 15
Kissing Bugs, Koalas and Clues to Life on Mars
A paper published by the Centers for Disease Control and Prevention argues that Chagas disease is now endemic in the U.S. Koalas may finally be spared from a deadly epidemic. Meanwhile NASA’s Perseverance Mars rover has uncovered tantalizing clues about potential ancient microbia ... Show More
9m 37s
Mar 2023
Heidi J. Larson, "Stuck: How Vaccine Rumors Start--and Why They Don't Go Away" (Oxford UP, 2020)
Vaccine reluctance and refusal are no longer limited to the margins of society. Debates around vaccines' necessity -- along with questions around their side effects -- have gone mainstream, blending with geopolitical conflicts, political campaigns, celebrity causes, and "natural" ... Show More
51m 29s
Feb 2025
The War on Science
U.S. science is in turmoil. Amid agency firings and confusion over federal funding, researchers are freaking out. Many can’t do their work, and they have no idea what the future holds. Plus, we’re hearing that all of this could jeopardize medical treatments for people in the U.S. ... Show More
37m 43s