New Scientist Podcasts

Episode 274

World leaders are in Colombia for the COP16 biodiversity summit. As delegates hash out a path forward, have we actually made any progress to protect global biodiversity since they last gathered? 

What would a Trump presidency mean for the climate? With the US election taking place on 5th November, two climate experts weigh in with their concerns. Leah Stokes works on climate policy at the University of California, Santa Barbara and Naomi Oreskes is a professor of earth and planetary science at Harvard.

And in a special mega feature on the microbiome, take a deep dive into the science of our guts:

First up, we know that antibiotics wipe out good and bad bacteria alike, but until now we didn’t realise just how intense those effects were. Now researchers have uncovered how many species of bacteria in our guts are killed off by antibiotics - and the truth of how long those impacts last.

We also learn how our guts are battlegrounds, where microbes are in a constant state of war, fighting for resources and territory. Most surprising of all is how some microbes are turned traitors and end up killing off their own kind.

And we provide a one-stop shop for all the science-backed ways to care for your gut and learn how the balance of microbes impacts healthy ageing, mental health and inflammation.

Hosts Rowan Hooper and Penny Sarchet (yes, she’s back!) discuss with guests James Dinneen, Michael Le Page, Carissa Wong and Alison George.

To read more about these stories, visit https://www.newscientist.com/

Learn more about your ad choices. Visit megaphone.fm/adchoices

Episode 273

The mystery of “Well Man”, an ancient cold case, has just been solved. A Norse saga tells that in 1197, in the midst of a Viking raid, warriors dumped a body in a well inside a castle. Over 800 years later, archeologists recovered a body from that very well – but didn’t have the technology to show it was the man from the saga… until now.

Some welcome good news about the climate. Energy imbalance, a key measure of global warming, has been rising fast, sparking fears that warming is accelerating faster than models predicted. But new findings suggest those fears are overblown and that there is hope yet.

Birth control pills may shrink your brain (a small amount). After experiencing mood and physical changes after coming off the pill, one neuroscientist discovered very little had been done to understand the impact of hormonal birth control on the brain. So she scanned her own brain 75 times over several months while on and off the pill. The results are in.

Hosts Rowan Hooper and Chelsea Whyte discuss with guests James Woodford, Michael Martin, Michael Le Page, Ben Sandersen, Grace Wade and Carina Heller.

To read more about these stories, visit https://www.newscientist.com/

Learn more about your ad choices. Visit megaphone.fm/adchoices

Episode 272

SpaceX has made history with its Starship rocket, the largest rocket ever built and one that’s hoped to eventually take us to Mars. In its fifth test, SpaceX successfully returned the rocket’s booster back to the launchpad and caught hold of it – an engineering feat of great finesse. But how close are we to putting crew on the rocket–- and when will it take humanity to the Red Planet? Leah-Nani Alconcel, spacecraft engineer at the University of Birmingham, joins the conversation.

We might be closer than ever before to bringing Tasmanian tigers (thylacines) back from extinction. That’s if de-extinction company Colossal is right about their latest discovery, of a nearly complete genome of the thylacine. Is this the breakthrough it seems to be? And can we truly bring back thylacines as they once were?  

Brain scans have revealed that bullying has a physical effect on the structure of the brain. Young people who are bullied see changes in various brain regions and it seems to impact male and female brains differently. Are these changes permanent? And is this cause to take bullying more seriously?

The “very fabric of life on Earth is imperilled.” That’s according to the latest annual State of the Climate report. Thirty-five “planetary vital signs” have been assessed by researchers and the outlook is bleak. But among all the worrying climate records we’ve broken there is hope. Hear from study author Tom Crowther of ETH Zurich. 

Hosts Rowan Hooper and Chelsea Whyte discuss with guests Leah Crane, Leah-Nani Alconcel, Michael Le Page, Alexandra Thompson, James Dinneen and Tom Crowther.

To read more about these stories, visit https://www.newscientist.com/

Hosted on Acast. See acast.com/privacy for more information.

Learn more about your ad choices. Visit megaphone.fm/adchoices

Episode 271

If we overshoot 1.5 degrees of global warming, there is no going back. The hope has long been that if - and when - we blow past our climate goals, we can later reverse the damage. But there’s no guarantee we can bring temperatures back down, according to a paper published in Nature this week. The report suggests it would take decades to get back to normal - and some of the more devastating consequences will be irreversible. Hear from a variety of experts on the problem of climate overshoot.

Living bacteria have been discovered in 2-billion-year-old rocks, making them very, very old. Find out how these primitive microbes survived for so long - and why this discovery is exciting news for the quest to find life on other planets.

Do you think you’ll make it to the ripe old age of 100? Human life expectancy has steadily been going up and up - but now it’s grinding to a halt, looking unlikely to exceed 84 for men and 90 for women. What’s going on? Is there a limit to human ageing, or is something else at play?

Hurricane Milton has caused immense damage across Florida and the death toll is rising. As it draws power from the hot oceans, there’s good reason to believe climate change is to blame for its rapid intensification. Hot on the heels of Hurricane Helene, why are extreme weather conditions picking up again so quickly?

Hosts Rowan Hooper and Chelsea Whyte discuss with guests Michael Le Page, Carl-Friedrich Schleussner, Joeri Rogelj, Wim Carton, Sam Wong, Carissa Wong and James Dinneen.

To read more about these stories, visit https://www.newscientist.com/ 

Get your tickets for New Scientist Live: https://www.newscientist.com/nslivepod 

Hosted on Acast. See acast.com/privacy for more information.

Learn more about your ad choices. Visit megaphone.fm/adchoices

The great auk was a flightless bird which was last spotted in Iceland in 1844. It is the subject of the book The Last of Its Kind: The Search for the Great Auk and the Discovery of Extinction. Written by Gísli Pálsson, an Icelandic anthropologist and academic, the book offers vital insights into the extinction of the species through accounts from the Icelanders who hunted them. 

Pálsson is on the shortlist for the Royal Society Trivedi Science Book Prize. In the lead up to the winner’s announcement, New Scientist books editor Alison Flood meets all six of the shortlisted authors.

In this conversation, Pálsson recounts how British ornithologists John Wolley and Alfred Newton travelled to Iceland in search of great auk specimens, only to find the birds had already vanished. He also explores the origins of the term "extinction" and shares his personal motivations for telling the story of the great auk.

The winner of the Royal Society Trivedi Science Book Prize will be announced on the 24th October. You can view all of the shortlisted entries here:

https://royalsociety.org/medals-and-prizes/science-book-prize/ 

To read about subjects like this and much more, visit https://www.newscientist.com/ 

Hosted on Acast. See acast.com/privacy for more information.

Learn more about your ad choices. Visit megaphone.fm/adchoices

Episode 270

There may be hope for the survival of coral reefs, a vital part of the global underwater ecosystem that is under massive threat from climate change. At 1.5 C degrees of warming we’re at risk of losing 70-90 per cent of coral - and more than 99 per cent is estimated to die off at 2 degrees. But new research suggests corals may be more adaptable and resilient than we thought. Hear from two experts on the matter, Chris Jury of the University of Hawaii and Terry Hughes, director of the Centre of Excellence for Coral Reef Studies at James Cook University in Australia.

A new exoplanet has been discovered in orbit around Barnard’s star - Earth’s closest single stellar neighbour. But could it be home to extraterrestrial life? And in this, the golden age of exoplanet discovery, how close are we to finding one that looks like Earth?

Remarkably preserved remains of a 16 month old toddler have been analysed, painting a detailed picture of life in ancient Italy. Despite being 17,000 years old, DNA samples have shown us the colour of the child’s skin, his eye colour, health conditions and even how closely his parents were related.

Russia’s invasion of Ukraine has been dubbed the “first drone war”. As the war rages on, drone combat has shifted from ad hoc, random encounters to highly strategic and coordinated assaults. With the increasing capabilities of drones and a ramp up in the expertise of operators, is this the future of the war - and is it a good thing?

Hosts Rowan Hooper and Chelsea Whyte discuss with guests Terry Hughes, Chris Jury, Alex Wilkins, Sam Wong and Jacob Aron.

To read more about these stories, visit https://www.newscientist.com/ 

Get your tickets for New Scientist Live: https://www.newscientist.com/nslivepod

Hosted on Acast. See acast.com/privacy for more information.

Learn more about your ad choices. Visit megaphone.fm/adchoices

Everything Is Predictable: How Bayes' Remarkable Theorem Explains the World is a book about an 18th century mathematical rule for working out probability, which shapes many aspects of our modern world. 

Written by science journalist Tom Chivers, the book has made it onto the shortlist for the Royal Society Trivedi Science Book Prize. In the lead up to the winner’s announcement, New Scientist books editor Alison Flood meets all six of the shortlisted authors.

In this conversation, Tom explores the life of Thomas Bayes, the man behind the theorem, and how he had no clue his discovery would have such sweeping implications for humanity. He explains the theorem’s many uses, both in practical settings like disease diagnosis, as well as its ability to explain rational thought and the human brain. And he digs into some of the controversy and surprising conflict that has surrounded Bayes’ theorem over the years.

The winner of the Royal Society Trivedi Science Book Prize will be announced on the 24th October. You can view all of the shortlisted entries here:

https://royalsociety.org/medals-and-prizes/science-book-prize/ 

To read about subjects like this and much more, visit https://www.newscientist.com/ 

Hosted on Acast. See acast.com/privacy for more information.

Learn more about your ad choices. Visit megaphone.fm/adchoices

Women have evolved over hundreds of thousands of years to have more sensitive noses, sharper hearing at high frequencies, and longer life expectancy than men. But why have women's bodies been so under-researched? It’s one of the many questions Cat Bohannon raises in her book Eve: How the Female Body Drove 200 Million Years of Human Evolution. 

Shortlisted for the Royal Society Trivedi Science Book Prize, Eve explores how women’s biology has shaped human history and culture. In the lead up to the winner’s announcement, New Scientist books editor Alison Flood meets all six of the shortlisted authors.

In this conversation, we hear what motivated Cat to spend more than a decade researching and writing the book, how understanding the evolution of female traits can give us deeper insights into the workings of our species, and the overlap between sexism and science. 

The winner of the Royal Society Trivedi Science Book Prize will be announced on the 24th October. You can view all of the shortlisted entries here:

https://royalsociety.org/medals-and-prizes/science-book-prize/ 

To read about subjects like this and much more, visit https://www.newscientist.com/

Hosted on Acast. See acast.com/privacy for more information.

Learn more about your ad choices. Visit megaphone.fm/adchoices

Why We Die is a book about ageing and death, written by Nobel Prize-winning biologist and former president of the Royal Society, Venki Ramakrishnan.

Venki is on the shortlist for the Royal Society Trivedi Science Book Prize. In the lead up to the winner’s announcement, New Scientist books editor Alison Flood meets all six of the shortlisted authors.

In this conversation, Venki explores humankind’s unique ability to understand and contemplate our own mortality, why some animals live such short lives and others for hundreds of years, if ageing is simply an inevitable and evolutionary practical part of life and whether emerging technologies will make it possible for us to life forever - if that’s really what we want.

The winner of the Royal Society Trivedi Science Book Prize will be announced on the 24th October. You can view all of the shortlisted entries here:

https://royalsociety.org/medals-and-prizes/science-book-prize/ 

To read about subjects like this and much more, visit https://www.newscientist.com/ 

Hosted on Acast. See acast.com/privacy for more information.

Learn more about your ad choices. Visit megaphone.fm/adchoices

As the heated race to settle humans on Mars continues, is it really a good idea? And what are the biggest challenges to making interplanetary life a reality?

These are the questions Kelly and Zach Weinersmith explore in their book, A City on Mars. The pair have been shortlisted for the prestigious Royal Society Trivedi Science Book Prize, and ahead of the winner's announcement, New Scientist books editor Alison Flood meets with all six shortlisted authors.

In this conversation, Kelly and Zach dive into the potential and the perils of building a sustainable human colony on the Red Planet, shedding light on some of the biggest hurdles humans would face. We also hear what inspired them to write the book, and they answer the million dollar question… would they move to Mars? 

The winner of the Royal Society Trivedi Science Book Prize will be announced on October 24th. You can view all of the shortlisted books here:

https://royalsociety.org/medals-and-prizes/science-book-prize/ 

To read about subjects like this and much more, visit https://www.newscientist.com/

Hosted on Acast. See acast.com/privacy for more information.

Learn more about your ad choices. Visit megaphone.fm/adchoices