The World, the Universe and Us

What does it mean to eat and live ethically in today’s world?  In 1975, Australian philosopher Peter Singer published his landmark book Animal Liberation, in which he advocated for a vegan diet and the improved treatment of animals, sparking a global movement for animal rights.  Almost 50 years on, amid scientific and ethical advancements, Singer has released an updated version of his book: Animal...

Suspended animation - the stuff of science-fiction, or a real-world solution to surviving long voyages into deep space? Actually it’s neither, but researchers have now successfully induced hibernation in mice and rats, suggesting that the same may be possible for humans... The team explores what this could mean for future medical treatments. Sand martins – known as bank swallows in North America -...

The world is undergoing a catastrophic biodiversity crisis, and the UK is one of the most nature-depleted countries in the world. The problems are big, but there are solutions. On this special episode of the show, host Rowan Hooper reports from the Knepp Estate in southern England, a large estate owned by Isabella Tree and Charlie Burrell, who have become pioneers in the rewilding movement. Rowan...

A new class of drugs that can reliably help you lose weight are generating great excitement in the fight against obesity - and Elon Musk and Hollywood actors have been using them too. Weight-loss scientists have developed hormone-mimicking injections that can reduce body fat by 20 per cent... and the team discuss how it works.   The world’s largest organism is not the blue whale. In fact, Pando th...

Want to live 20 percent longer? Well, it may be possible in the future thanks to a new discovery. A life-extending mutation has been found in mice, and the team explains how its benefits can be transferred by transplanting blood stem cells. But will it work in humans? Cows’ burps are a big problem for global warming - but could kangaroo poo be the solution? We hear about a novel new idea to replac...

On this bonus episode of the podcast we present a guide on how to think about some of the most important and mind-bending concepts in science, from artificial intelligence to mental health, from nutrition to virtual particles. It all comes from a special How To Think About issue of New Scientist that is out now – the team discuss some of the things it covers. Other topics include consciousness, wo...

Lab-grown meat may be cruelty free, but is it really better for the environment? Not at the moment. In fact, the team finds out how it’s up to 25 times worse than normal meat. And with prices still astronomically high, will it ever become a viable replacement? Are we waking up the sleeping Arctic ocean? Melting sea ice from rising global temperatures is having a knock on effect on one of the Arcti...

Spinal cord stimulation has, for the first time, been shown to help two people with upper body paralysis due to stroke regain some arm movement.  To find out how this groundbreaking technology works, New Scientist health reporter Grace Wade speaks to two researchers who helped conduct this research - Nikhil Verma at Carnegie Mellon University in Pittsburgh, Pennsylvania and Erynn Sorensen at the U...

From bright lights at the end of a tunnel, to hearing dead loved ones, there are many common sensations related to near death experiences. But what’s going on in the brain to cause them? The team hears about a signal measured in the brains of people just before they died. Aliens may make contact with Earth as early as 2029. That’s the theory at least. The team explains how some of NASA’s deep spac...

As humans are responsible for the devastation of the world’s forests, surely it’s our job, then, to step in and make things right? Well, not according to German forester and best-selling author Peter Wohlleben. In his latest book ‘The Power of Trees’, he argues that forestry management, tree planting, and the exploitation of old growth forests is ecologically disastrous, and that trees and forests...

With SpaceX’s Starship blowing up, and ispace’s lander crashing into the moon, in the last week two of the most exciting missions of the year have failed. The team finds out what went wrong, and how long it’ll be until these missions can try again. Fish farts and genital stridulation - the team shares a beautiful underwater soundscape of British ponds, recorded using a hydrophone. They learn about...

Have you ever stopped to think about what life underwater sounds like?  Well, now is your chance to hear it first-hand as multi-instrumentalist, composer and producer, Cosmo Sheldrake, has released a collection of music composed entirely out of recordings from our oceans and the animals that inhabit them. 'Wild Wet World' has been a decade in the making and features the sounds of humpback whales s...

Based on the 1988 David Cronenberg film, the new six-part TV series Dead Ringers tells the story of identical twin doctors - played by Rachel Weisz - as they explore innovations in childbirth and fertility. In this bonus episode of the podcast, our TV columnist Bethan Ackerley speaks to the show's lead writer, Alice Birch, about how she took on Cronenberg’s twisted tale, why it was important to in...

With action on climate change moving so slowly, is it time for more radical activism? Have we been left with no option but to use sabotage and property destruction as a way to protect our planet?  Those are the questions a new film, How To Blow Up A Pipeline, aims to get you thinking about. Based on the nonfiction book of the same name by Swedish academic Andreas Malm, the film leaves viewers ques...

We’ve all seen the moths gather around the kitchen light or campfire flame at night, but have you ever wondered why they’re drawn to it? Well, there are loads of theories, but the team explores a brand new one which suggests insects don’t come seeking the light, but are instead imprisoned by it. Life finds a way. Even amid the vast swathe of plastic and junk in the Great Pacific Garbage Patch, cre...

How many people can we physically feed on Earth? As the global population is predicted to reach 11 billion by the end of the century, do we have enough land to feed all those mouths? The team discusses the safest ways to feed the world, and finds out the absolute limit of Earth’s capacity. You know those fetching tunics Stone Age people wore? Well, we may have figured out how they stitched them to...

How long can a human live for? The world record is 122 years, and while some people believe our bodies aren’t capable of surpassing that, a new theory suggests we could see the record broken in a decade’s time. The team explains how this could be possible. An upgraded version of the classic double-slit experiment has observed how light interacts through differences in time rather than space. Resea...

Sea otters, American bison and grey wolves are among nine groups of animals that could help fight climate change. The team discusses the various attributes that make these groups particularly impactful, and they explain what we’d need to do to help populations grow. An ancient supermassive black hole that formed in the early moments of the universe has been spotted by the James Webb Space Telescop...

As countries continue dragging their feet on emissions reductions, the latest  synthesis report from the Intergovernmental Panel on Climate Change is another call to arms, warning of catastrophic impacts of climate change. The team digs into the report and asks whether the goal of limiting global warming to 1.5°C is now beyond reach. ChatGPT’s successor GPT-4 is here, and excitement is brewing as...

In this bonus episode, join host Rowan Hooper as he ventures to Svalbard, the Norwegian archipelago in the far north, just 1000 km from the North Pole.  The Arctic is warming far faster than any other region on the planet, making Svalbard an incredible natural laboratory to study climate change, and particularly, melting glaciers. Svalbard is also home to a large population of the world’s largest...

Brainoids - tiny clumps of human brain cells - are being turned into living artificial intelligence machines, capable of carrying out tasks like solving complex equations. The team finds out how these brain organoids compare to normal computer-based AIs, and they explore the ethics of it all. Sickle cell disease is now curable, thanks to a pioneering trial with CRISPR gene editing. The team shares...

Whether it’s on the Moon, Mars or somewhere even more distant, we may see human settlements in space in our lifetime. But when we do, will we be prepared? Alongside all the concerns of whether we should even be considering moving out to space, there are a lot of ethical considerations that need to be thought about too. How do you govern the new societies you’re forging? How do you hold the leaders...

Matter we’ve long thought missing from galaxies has finally been found. Great news…except there’s one catch. It turns out that perhaps this matter should be missing, based on our understanding of the way young galaxies form. So what’s going on? The team finds out where and how this matter was found, and what it means for our understanding of galaxies. A life-saving trial is sequencing the entire g...

As millions of people around the world suffer from long covid, research into how viruses trigger chronic health conditions is getting a lot more focus. The team explores the role of viruses in both chronic fatigue syndrome and fibromyalgia, and touch on our latest understanding of long covid. Our understanding of how galaxies form could be entirely wrong. Huge young galaxies seen by the James Webb...

On this bonus episode of the podcast, host Rowan Hooper sits down with New Scientist magazine editor Cat de Lange, and science journalist Sally Adee to talk about the wonders of the electrome: the natural electricity that courses through our bodies. Most of us know that we rely on bioelectricity in our brains and nervous systems, for processing information and sending signals to and from the brain...