The latest UN climate report is out and we鈥檝e blown past 1.5 degrees of warming. We鈥檙e now in 鈥渙vershoot鈥� – an acknowledgement that global temperatures will rise beyond 1.5 degrees, but can theoretically be brought back down again through cooling efforts.

But with the world on track fo r2.8 and even as much as 4.5 degrees of warming by 2100, is the challenge of keeping temperatures at a manageable level politically and technologically feasible?

As scientists argue whether 鈥渙vershoot鈥� is failure, conditions at Thwaites glacier in Antarctica are also worsening. The so-called 鈥淒oomsday鈥� glacier is melting and an integral ice shelf is on the verge of collapse.

Now models show the melting is locked in – and can鈥檛 be stopped even if we keep global temperatures down. If it collapses, it could reshape the entire coastline of the world.

To discuss the news, Rowan Hooper and Penny Sarchet are joined by Madeleine Cuff and Alison George.

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The glymphatic system is the brain鈥檚 waste disposal system – responsible for clearing out harmful toxins that build up during the day.

Now a new mouse study has connected reduced glyphatic flow to Alzheimer鈥檚 disease. And because this glymphatic system cleans the brain during sleep, it鈥檚 thought poor sleep may contribute to this reduction in brain function.

Rowan Hooper and Penny Sarchet are joined by science writer Michael Marshall, who explains the study in detail, what we know about the effects in humans and the steps we can take to improve our own glymphatic flow.

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We learn how avoiding AI could give our brains a dopamine hit and How to really make a habit stick.

Produced by Emily Bird

The Atlantic Meridional Overturning Circulation (AMOC)  is a major system of ocean currents that plays a vital role in Earth鈥檚 climate. If it collapses, the consequences could be catastrophic. We could see ice-age level winters in Europe, coupled with scalding hot summers – and impacts on food production around the world. The trouble is it鈥檚 already weakening.

That鈥檚 why scientists are building an early warning system that’ll warn us of imminent AMOC collapse. But will a warning come soon enough for us to act – and will anyone actually listen?

The team explains how the warning system would work, what happens if the AMOC does collapse and how soon it could happen. Plus they look at new research which suggests the AMOC may not be a classic tipping point – because we may be able to resuscitate it even if it stops.

To discuss this, Penny Sarchet and Rowan Hooper are joined by climate reporters Alec Luhn and Madeleine Cuff. 

Series 3 of Change Your Mind with New 女生小视频 is on its way! But we couldn’t leave you with nothing whilst we put together our next batch of myth-busting interviews with top brain experts. Cat de Lange and Helen Thomson share the very best tips and tricks they’ve picked up in their decades as Health Journalists.

We learn how protecting your hearing could be the secret to protecting against dementia and how to fight habituation and feel more alive.

Produced by Emily Bird

Jonathan the tortoise was born in the year 1832, on a beach in the Seychelles. 194 years later and Jonathan is still alive, celebrating his birthday. How exactly has he managed to survive for so long?

Jonathan is a giant tortoise and the world鈥檚 oldest known land animal. His genome has now been sequenced, revealing intriguing hints about longevity. And it seems the key to a long life is all down to mitochondrial function.

From Greenland Sharks to the enigmatic quahog, this also seems to be the case for Earth鈥檚 other longest-lived creatures – one of which survived for 507 years. 

Rowan Hooper and Penny Sarchet discuss what these animals tell us about the science of healthy aging, whether there are any takeaways for us humans – and they celebrate the amazing life of Jonathan.

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In this special listener Q&A, Cat de Lange and Helen Thomson bring series two of Change Your Mind with New 女生小视频 to a close by answering questions from the inbox. Drawing on neuroscience research, they explore effective studying, stress, memory and the claims surrounding popular brain-health supplements.

Along the way, they consider why the way we take notes might matter, what doodling could be doing for your attention, and whether having a pet can benefit your brain.

Change Your Mind will be back with two shorter episodes of brain-boosting tips, before returning for series three with new expert guests and discoveries.

We want to hear your thoughts, so leave a comment or send your ideas and questions for future episodes to changeyourmind@newscientist.com.

Produced by Emily Bird.

A new species of feathered dinosaur has been discovered – and it looks like a supercharged magpie with teeth. Fossil evidence and an artist鈥檚 reconstruction show the dinosaur looks remarkably like a bird – yet it鈥檚 not actually an ancestor of modern birds.

Over 100 million years old, Norellraptor barsboldi is named after two famous palaeontologists – one of whom taught palaeontologist Steve Brusatte.

Steve is the author of The Story of Birds and joins the team to discuss this incredible finding, which shows flight may have evolved at least two separate times. He also explains how dinosaurs didn鈥檛 go extinct – but still roam among us today.

On the panel are Rowan Hooper and Penny Sarchet.

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Joining them is Brendon Stubbs, a leading researcher in physical activity and mental health. Together, they look at what science is beginning to reveal about exercise and the brain, whether some kinds of movement might be better than others, and how much you need to do to make a difference. 

Produced by Emily Bird 

Got a topic you’d like us to cover? Email us at 鈦燾丑补苍驳别测辞耻谤尘颈苍诲蔼苍别飞蝉肠颈别苍迟颈蝉迟.肠辞尘鈦�

The current El Ni帽o is shaping up to cause catastrophe on a global scale. Global temperatures are being pushed up, unleashing extreme weather which could devastate ecosystems. The heat alone is expected to kill half a million people over the next five months.

Sea-surface temperatures are expected to climb 4掳C above average in parts of the Pacific – and it鈥檚 becoming clear this is an issue that affects us all. From extreme heat in some places to heavy rainfall in others, many countries are bracing for impact. Combined with the threat of 鈥渒ing tides鈥�, California has even declared a state of emergency.

Despite the sweltering heat we鈥檝e just experienced, forecasters now say 2027 will be the hottest year on record – before it鈥檚 even begun. So how can we prepare?

To discuss the threat we鈥檙e facing and possible solutions (like geoengineering), Rowan Hooper and Penny Sarchet are joined by climate journalists Madeleine Cuff and Alec Luhn.

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