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PODCAST

The world, the universe and us

From the evolution of intelligent life, to the mysteries of consciousness; from the threat of the climate crisis to the search for dark matter, The world, the universe and us is your essential weekly dose of science and wonder in an uncertain world. Hosted by journalists Dr Rowan Hooper and Dr Penny Sarchet and joined each week by expert scientists in the field, the show draws on New Scientist’s unparalleled depth of reporting to put the stories that matter into context. Feed your curiosity with the

science

All Episodes

28:32

This breakthrough could let gay couples have...

The world, the universe and us ·

2025/06/27

A groundbreaking experiment in reproductive biology has resulted in mice being born from two biological fathers. By fusing sperm and putting them into an emptied egg cell, researchers in China have produced healthy and fertile offspring from two male mice. While it’s early days and the technique requires hundreds of embryos to get results, it opens up the possibility of same-sex reproduction in mammals, including humans, in the future.New insights into the power of sleep reveal how short naps can

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36:18

First skull of mysterious human ancestor; Decoding...

The world, the universe and us ·

2025/06/20

Episode 308An ancient skull discovered in China has been confirmed to belong to a Denisovan. It’s been tough to study this mysterious human ancestor, as we’ve only ever found a finger and jaw bone - so this new discovery could reshape our understanding of them. After being kept secret for decades, the “dragon man” skull is opening up a new window into our past. We’ve unlocked another clue in our quest to decode whale language. Analysis of 15 sperm whales in the Caribbean suggest their language

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31:23

Is this the first step to cyborg brains? How drones...

The world, the universe and us ·

2025/06/13

Episode 307Using new “ultrasoft” electronics, researchers at Harvard have effectively created tadpole cyborgs. A soft bioelectronic device has been implanted into their brains - one which grows with them as they develop into frogs. This neural implant is a first step in helping us better understand the inner workings of the brain. But could this work in mammals…or humans? Discussing just that, the Royal Society held a meeting this week called Cyborg Futures. How soon until humans become one with

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25:37

$1 trillion of platinum on the moon; how your brain...

The world, the universe and us ·

2025/06/06

Episode 306It’s been discovered that the moon is probably home to $1 trillion worth of platinum. Researchers suggest nearly 6500 of the Moon’s craters were made by asteroids containing commercial quantities of platinum, palladium, rhodium, ruthenium, iridium and osmium. Does that mean space companies are going to head out on mining missions imminently…and should they? Hear the reasons for and against mining on the Moon. When you imagine something in your mind, how does your brain know that it’s

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34:43

The real threat of AI - ethics, exploitation and the...

The world, the universe and us ·

2025/05/30

Episode 305As artificial intelligence grows into more and more aspects of our lives, it seems we’re just at the beginning of the boom. Hundreds of billions of dollars are being pumped into advancing AI capabilities, making it the best funded area in science. But, just like the dot-com revolution, is it a bubble waiting to burst? In this special episode of the podcast, we explore the growing promise of AI - and also the existential threat it poses. Despite the amount of money going into AI,

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23:24

Are smartphones really causing mental illness in...

The world, the universe and us ·

2025/05/23

Episode 304It seems the world is on heightened alert about the impact smartphones are having on our children’s brains. But are we right to be worried? Jonathan Haidt’s book the Anxious Generation has played a big role in this debate, with many researchers agreeing smartphones cause harm and action needs to be taken. But is there actually any scientific evidence to back all of these claims up? The “strongest evidence” for alien life was announced just a few weeks ago - but not everyone was happy

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27:55

China’s carbon emissions fall; norovirus vaccine;...

The world, the universe and us ·

2025/05/16

Episode 303China is becoming a de facto leader in the fight against climate change. Right now it’s the world’s biggest emitter of carbon dioxide, but after years of keeping its emissions steady, they have finally begun to fall. And this is all while China’s power demands have increased - suggesting its efforts to build clean energy are paying off. But is this enough to make a realistic dent on curbing global warming? And how will the uncertainty of President Trump’s administration impact this

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28:02

Ocean wonders and the new arguments against deep-sea...

The world, the universe and us ·

2025/05/09

We dive into the mysterious world of the deep sea, sparked by a recent executive order aiming to ramp up offshore mineral extraction, as well as new research revealing that 99.999 per cent of the seabed remains unexplored. Experts discuss the surprising lack of deep-sea exploration, the ecological wonders already discovered, like hydrothermal vents and bizarre deep-sea creatures, and the debate over mining nodules from the ocean floor. With new battery tech on the horizon and mounting environmental

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28:45

Is our understanding of light completely wrong? Two...

The world, the universe and us ·

2025/05/02

Episode 301Our understanding of the nature of light might be completely wrong. The double-slit experiment is one of the most famous experiments in physics and is how we’ve understood light for over 200 years. But a team is now suggesting we’ve got the interpretation all wrong - that light is in fact not a wave and is only made up of particles. If true, this is major. The authors of this study were left scrambling as “all hell broke loose” when they made the discovery. And the best part? Dark

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29:03

Weekly: First brain engineering in a mammal; landmark...

The world, the universe and us ·

2025/04/25

Episode 300The first genetically engineered synapses have been implanted in a mammal’s brain. Chemical brain signals have been bypassed in the brains of mice and replaced with electrical signals, changing their behaviour in incredible ways. Not only did they become more sociable, they were also less anxious and exhibited fewer OCD-like symptoms. This work has sparked hope that one day we could use this technology to help humans with mental health conditions. But would you want someone making

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41:50

Weekly: Why the climate crisis is an issue of...

The world, the universe and us ·

2025/04/18

Episode 299In a climate justice special episode of the podcast, the biggest issue of the century is up for discussion. Find out the true impact of climate change on our planet and who should be paying to fix the crisis. Rowan Hooper and Madeleine Cuff are joined by two climate experts - Friederike Otto and Joyce Kimutai from the World Weather Attribution project at Imperial College London. This episode is dedicated to answering three questions - starting with the issue of climate attribution. To

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17:59

Weekly: Have we really just found the strongest...

The world, the universe and us ·

2025/04/17

Episode 298 Big news has just broken - astronomers claim they’ve detected the strongest evidence for alien life yet. The news has got the world’s media fired up with excitement - but is this really a “revolutionary moment”? Astronomers studying the atmosphere of a distant planet called K2-18b say they have detected a molecule called DMS that is only produced on Earth by living organisms, so it’s thought life might be producing it there too. Hear from the lead researcher on this project, Nikku

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21:53

Weekly: Dire wolves (not) brought back from...

The world, the universe and us ·

2025/04/11

Episode 297The “de-extinction company” Colossal Biosciences claims to have brought dire wolves back from extinction. This is an ancient animal that roamed Earth 10,000 years ago and famously is depicted in Game of Thrones. After gene editing grey wolves, three pups have been born. But is it right to call them dire wolves, or are these just grey wolves in dire wolf clothing? It’s a turbulent time for US science, with massive and sweeping cuts being made to jobs and budgets. Departments like the

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27:10

Weekly: How plant skin transplants could supercharge...

The world, the universe and us ·

2025/04/04

Episode 296There’s a strange phenomenon in the plant world that we’ve known about for ages - but have only just figured out how to make use of it. Thanks to a process that sometimes happens during plant grafting, we can give plants skin transplants. This process produces ‘graft chimeras’, which have been seen as mere curiosities for many years. But now one company in the Netherlands is now planning to do something more with them, creating a whole new world of plant combinations that could produce

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22:45

Weekly: A remarkable view of pregnancy; how to waste...

The world, the universe and us ·

2025/03/28

Episode 295The changes the body goes through during and after pregnancy have been examined in more detail than ever before. A landmark study is finally helping us to piece together some of the mysteries and myths surrounding this time – from how long it takes the body to go back to “normal” after birth to the extended periods of nutrient deficiency. This comes after a flurry of studies have given us the clearest picture yet of how the brain changes – and is dramatically remodelled – throughout

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20:17

Weekly: Life on Mars; biggest dark energy discovery...

The world, the universe and us ·

2025/03/21

Episode 294Markings discovered on rocks from Mars look to be good evidence that microbial life once existed on the Red Planet. NASA’s Perseverance rover spotted little speckles on rocks in part of Jezero crater, and minerals usually formed in the presence of water. New analysis suggests these markings also contain signs of organic compounds. Presented with the possibility of microbial Martians, can we now say Mars really did once have life? Dark energy, the mysterious force thought to be driving

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27:43

Weekly: America is turning its back on science and...

The world, the universe and us ·

2025/03/14

Episode 293The future of NASA and of US science is under threat, following cuts made by the Trump administration. Johns Hopkins University lost $800 million in grants this week which will impact the health of people all over the world. At the same time, there’s chaos at NASA where the budget is set to be cut in half, with multiple people losing their jobs overnight. What missions will we have to sacrifice - and will NASA survive? As we pump ever increasing amounts of carbon dioxide into the

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27:56

Weekly: Chimps, bonobos and humans have more in...

The world, the universe and us ·

2025/03/07

Episode 292Chimps are often seen as our hyper-aggressive ancestral cousins, while bonobos are famously more peaceful and caring. But studies of their sexual habits and practices show they are much more alike than we realised. Both apes appear to use sex and genital contact not just to reproduce, but also to smooth tensions in the group, deal with stressful situations and handle conflict at feeding time. Sophie Bergudo has recently finished a PhD on chimp behaviour and shares insights from her time

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36:59

Weekly: How to finally get a good night’s sleep -...

The world, the universe and us ·

2025/02/28

Episode 291Who got better sleep - hunter-gatherers or modern-day humans? We’re constantly being told we’re in the midst of an epidemic of poor sleep, but were our ancestors spending any longer in bed than we are? The answer may well surprise you. We weigh up the pros and cons of sleeping in industrialised societies and explore the real reasons why we’re always complaining about being tired. We often hear you can’t make up for a bad night’s sleep - once you’ve missed those precious hours in bed, no

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25:48

Weekly: Life-saving mice perform first aid; tiny...

The world, the universe and us ·

2025/02/21

Episode 290 Mice have been found saving the lives of their cagemates by performing a resuscitation technique similar to CPR. After opening the mouth of an unconscious mouse, the “attending mouse” yanks up its tongue to clear the airways and dislodges anything that’s stuck. This remarkable discovery shows that empathy and consolation behaviour is more widespread in mammals than we thought, and hints at a mouse theory of mind. Tiny, lab-grown bits of human brain are being combined to create something

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