Tag Archives: Science Podcasts

Science: Nuclear War Threat, Climate Change, Coronavirus Origins

As the war in Ukraine intensifies, Vladimir Putin raised Russia’s nuclear readiness level. The team discusses what this means about the likelihood of nuclear war. They also explore the unfolding humanitarian crisis in the country.

The latest Intergovernmental Panel on Climate Change report is out, and it focuses on impacts, adaptation and vulnerability. We hear from Swenja Surminski, head of adaptation research at the Grantham Research Institute on Climate Change and the Environment.

New studies into the start of the coronavirus pandemic are confirming what we’ve long suspected – that the virus originated at the Huanan food market in Wuhan. The team discusses the latest findings.

Moles – the animals that make holes in your lawn – are non-binary. Just one of a number of amazing facts to come out of the new book ‘BITCH: A Revolutionary Guide to Sex, Evolution & the Female Animal’. Hear from the author Lucy Cooke, who is challenging the sexist basis of much of the thinking about female animals. 

Stonehenge may have been built as a giant calendar. Though the claim itself isn’t new, the team explores a new theory from the archaeologist Tim Darvill which explains how it would’ve worked.

Science: Saving Children From Cancer, Greenhouse Gases, SpaceX Missions

Children with some of the most aggressive forms of cancer are being saved by a personalised medicine treatment programme in Australia. The Zero Childhood Cancer Program has saved more than 150 children who would’ve otherwise died. The team shares a moving interview with one of the parents. 

Lichens evolve even more slowly than you might think. The team examines new research into the abundant Trebouxia genus of lichen which appears to take around a million years to adapt to changing climate conditions.

Enhanced weathering – using ground-up rocks to draw carbon dioxide out of the atmosphere – is one of a number of technological carbon capture solutions being tested to try and mitigate against global warming. The team speaks to Professor David Beerling of the University of Sheffield, one of the scientists in the UK leading the development of this technique.

SpaceX has a suite of three missions planned to launch in its Polaris programme. The first aims to take its Dragon crew capsule higher into orbit than anyone has flown since the Apollo moon missions. The team shares what we know so far.

And they find out whether adult human brains can actually grow new neurons. Spoiler: it doesn’t look good.

Science: Tonga Volcanic Eruption, Roaming Genes Of Reindeers, Pterosaurs

Scientists scramble to understand the devastating Tongan volcano eruption, and modelling how societal changes might alter carbon emissions.

In this episode:

00:46 Understanding the Tongan eruption

On the 15th of January, a volcano in the South Pacific Ocean erupted, sending ash into the upper atmosphere, and unleashing a devastating tsunami that destroyed homes on Tonga’s nearby islands. Now scientists are trying to work out exactly what happened during the eruption — and what it means for future volcanic risks.

News Feature: Why the Tongan eruption will go down in the history of volcanology

08:49 Research Highlights

The genes associated with reindeers’ roaming behaviour, and how fossilised puke has thrown up new insights into pterosaurs’ stomachs.

Research Highlight: A reindeer’s yearning to travel can be read in its genes

Research Highlight: Petrified puke shows that ancient winged reptiles purged

11:29 Modelling societal changes to carbon emissions

A team of researchers have modelled what humans might do in the face of climate change, and looked at how societal, political and technological changes could alter future emissions.

Research article: Moore et al.

18:12 Briefing Chat

We discuss some highlights from the Nature Briefing. This time, China alters its guidelines for gene-edited crops, and how Guinea worm infections have been driven down from millions of cases a year to just 14.

Nature News: China’s approval of gene-edited crops energizes researchers

Nature News: Just 14 cases: Guinea worm disease nears eradication

Science: Water Flow And Quantum Friction, Super Soap Bubbles, Hippos

How quantum friction explains water’s strange flows in carbon nanotubes, and the latest from the Nature Briefing.

In this episode:

00:53 A theory for water’s baffling behaviour in carbon nanotubes

At large scales, water flows faster through a wider pipe than a narrower one. However, in tiny carbon nanotubes flow-rate is flipped, with water moving faster through the narrowest channels. This week, researchers have come up with a new explanation for this phenomenon: quantum friction. If validated, it could allow material designers to fine-tune flows through tiny channels, which could be useful in processes such as water purification.

Research Article: Kavokine et al.

06:43 Research Highlights

Creating soap bubbles that last 200,000 times longer, and hippos’ habit of aggressively spraying dung when they hear a stranger.

Research Highlight: No bursting for these record-breaking bubbles

Research Highlight: Hippos know strangers’ voices — and make a filthy reply

09:08 Briefing Chat

We discuss some highlights from the Nature Briefing. This time, a global study reveals how antibiotic-resistant infections have led to millions of deaths, and a genetic mutation that plays a big role in a dog’s size.

Nature News: The staggering death toll of drug-resistant bacteria

Nature News: Big dog, little dog: mutation explains range of canine sizes

Nature Video: 

Science: Fecal Pills That Treat Gut Infections, Squirrel Hibernations

On this week’s show: A pill derived from human feces treats recurrent gut infections, and how a squirrel’s microbiome supplies nitrogen during hibernation.

First up this week, Staff Writer Kelly Servick joins host Sarah Crespi to discuss putting the bacterial benefits of human feces in a pill. The hope is to avoid using fecal transplants to treat recurrent gut infections caused by the bacterium Clostridium difficile.

Also this week, Hannah Carey, a professor in the department of comparative biosciences within the school of veterinary medicine at the University of Wisconsin, Madison, talks with Sarah about how ground squirrels are helped by their gut microbes during hibernation.

Science: Random Genome Mutations, Ancient Peru’s Hallucinogenic Beer

Challenging the dogma of gene evolution, and how chiral nanoparticles could give vaccines a boost.

In this episode:

00:45 Genome mutations may be less random than previously thought

A long-standing doctrine in evolution is that mutations can arise anywhere in a genome with equal probability. However, new research is challenging this idea of randomness, showing that mutations in the genome of the plant Arabidosis thaliana appear to happen less frequently in important regions of the genome.

Research article: Munroe et al.

News and Views: Important genomic regions mutate less often than do other regions

13:45 Research Highlights

How hallucinogenic beer helped cement an ancient superpower’s control, and a surprisingly enormous colony of breeding fish.

Research Highlight: Drug-fuelled parties helped ancient Andean rulers to hold power

Research Highlight: Vast fish breeding colony is more than twice the size of Paris

16:11 How a left-handed nanoparticle could give vaccines a boost

The chirality of a molecule – whether it has a left- or right-handed orientation – can have significant impacts on how it works. This week, a team show that left-handed gold nanoparticles can stimulate the immune system of mice, and boost the activity of a flu vaccine.

Research article: Xu et al.

News and Views: Nanoparticle asymmetry shapes an immune response

23:04 Briefing Chat

We discuss some highlights from the Nature Briefing. This time, Tasmanian devils’ discerning diets break the rules on scavenging, and new techniques uncovering the sex of ancient human remains may rewrite our assumptions.

Cosmos: Tasmanian devils puzzle science with picky eating habits

The Observer: Archaeology’s sexual revolution

Science: Cloning Saves An Endangered Species And Exoplanet ‘Super-Earths’

On this week’s show: How cloning can introduce diversity into an endangered species, and ramping up the pressure on iron to see how it might behave in the cores of rocky exoplanets.

First up this week, News Intern Rachel Fritts talks with host Sarah Crespi about cloning a frozen ferret to save an endangered species.

Also this week, Rick Kraus, a research scientist at Lawrence Livermore National Laboratory, talks about how his group used a powerful laser to compress iron to pressures similar to those found in the cores of some rocky exoplanets. If these super-Earths’ cores are like our Earth’s, they may have a protective magnetosphere that increases their chances of hosting life.

Science: 2021 Top Stories Of The Year, Marijuana Research, Book Reviews

On this week’s show: The best of our online stories, what we know about the effects of cannabinoids, and the last in our series of books on race and science.

First, Online News Editor David Grimm brings the top online stories of the year—from headless slugs to Dyson spheres. You can find out the other top stories and the most popular online story of the year here.

Then, Tibor Harkany, a professor of molecular neuroscience at the Medical University of Vienna’s Center for Brain Research, talks with host Sarah Crespi about the state of marijuana research. Pot has been legalized in many places, and many people take cannabinoids—but what do we know about the effects of these molecules on people? Tibor calls for more research into their helpful and harmful potential. 

Finally, we have the very last installment of our series of books on race and science. Books host Angela Saini talks with physician and science fiction author Tade Thompson about his book Rosewater. Listen to the whole series.

Science: Brain Cells Wired To The Matrix, DeepMind Search Engine, Omicron

In a step towards creating intelligent cyborg brains, Cortical Labs in Melbourne have trained lab-grown brain organoids to play a classic 1970s video game. The team explains how the brain cells live in a Matrix-like, simulated world, where all they know is Pong. 

And there’s more AI news, as the team digs into DeepMind’s invention of a ‘search engine’ style supercomputer, one much smaller than its competitors. The team discusses sleep, and how manipulating the hypnagogic phase of sleep can lead to bursts of creativity. As the holiday season approaches, Omicron shows no signs of letting up, so the team brings you up to speed on what we know so far. And they bring two bird related stories, one about the superpowers of zebra finches and the other about the link between personality types and feather colours in turkeys. On the pod are Rowan Hooper, Penny Sarchet, Michael Le Page, Clare Wilson and Matt Sparkes. To read about these stories and much more, subscribe at newscientist.com/podcasts.

Science: Pluto’s Giant Ice Patterns, Pamplona’s Bull-Running Crowd Dynamics

An explanation for giant ice structures on Pluto, and dismantling the mestizo myth in Latin American genetics.

In this episode:

00:46 The frozen root of Pluto’s polygonal patterns

In 2015, NASA’s New Horizons probe sent back some intriguing images of Pluto. Huge polygonal patterns could be seen on the surface of a nitrogen-ice ice filled basin known as Sputnik Planitia. This week, a team put forward a new theory to explain these perplexing patterns.

Research article: Morison et al.

06:15 Research Highlights

How Pamplona’s bull-running defies the dynamics of crowd motion, and self-healing microbial bio-bricks.

Research Highlight: Running of the bulls tramples the laws of crowd dynamics

Research Highlight: It’s alive! Bio-bricks can signal to others of their kind

09:06 How the mixed-race ‘mestizo’ myth has fostered discrimination

The term ‘mestizo’ emerged during the colonial period in Latin America to describe a blend of ethnicities – especially between Indigenous peoples and the Spanish colonizers. But this label is a social construct not a well-defined scientific category. Now researchers are challenging the mestizo myth, which they say is harmful and has a troubling influence on science.

Feature: How the mixed-race mestizo myth warped science in Latin America

17:22 Briefing Chat

We discuss some highlights from the Nature Briefing. This time, how interrupted sleep could be a route to creativity, and the development of vaccines to target respiratory syncytial virus.

New Scientist: Interrupting sleep after a few minutes can boost creativity