New Scientist Weekly


#160 Rejuvenation treatments; world to breach 1.5 degrees of global heating

Season 1, Ep. 160

A cure for ageing, without the price-tag? It might sound too good to be true, but the team digs into new evidence that shows low-frequency ultrasound may rejuvenate cells in our body which are thought to cause age-related diseases

Our galaxy, the Milky Way, is missing half of its matter - and the team asks where it’s all gone. They also discuss NASA’s ShadowCam which has taken pictures of Shackleton Crater on the south pole of the Moon, a region of particular interest if humans are to settle on the Lunar surface.

Despite dramatic heat waves over the past few years, the Earth has actually been in a cooling period, known as La Niña, for the last three years. So with an El Niño on the way - a period of warming - the team finds out about the coming climate impacts, and how we might breach 1.5 degrees of global heating.

Oyster mushrooms eat nematodes - who knew? And as the team finds out, they even do it in a pretty gruesome way, using a sort of nerve gas. The question is, can they still be considered vegan?

For a unique take on the climate crisis and the personal responsibility we feel in tackling it, Rowan chats to Assaad Razzouk, author of Saving the Planet Without the Bullshit: What They Don't Tell You About the Climate Crisis. He explains why we shouldn’t worry about going vegan or cutting down on flying, and reveals the real things we should be angry about when it comes to climate change.

On the pod are Rowan Hooper, Penny Sarchet, Madeleine Cuff, Michael Le Page and Leah Crane. To read about these subjects and much more, you can subscribe to New Scientist magazine at

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#176 Human organoids are new AI frontier; Listening to the big bang through the cosmic microwave background

Season 1, Ep. 176
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 the story of a woman whose life has been transformed by the treatment.We can now hear the sound of the afterglow of the big bang, the radiation in the universe known as the cosmic microwave background. The team shares the eerie piece that has been transposed for human ears, named by researchers The Echo of Eternity.Artificial intelligence can now read our minds…under a very specific set of circumstances. The team looks at a mindblowing new study which feels very sci-fi.Pop legend and environmentalist Feargal Sharkey makes a cameo to highlight the campaign New Scientist is running in collaboration with the i newspaper, to draw attention to the shocking state of Britain’s rivers. Great apes like to twirl around like ballerinas. As the team finds out, it turns out it’s not just humans who like to spin around and make themselves dizzy, it’s fun for many other species of ape too.Bonnie Garmus, author of the bestselling novel Lessons In Chemistry, speaks to comment and culture editor Alison Flood about the success of her debut novel. She explains the inspiration behind her protagonist and why she made her a chemist. And she discusses fan-favourite character Six-Thirty the dog and the intelligence of animals.On the pod are Rowan Hooper, Penny Sarchet, Michael Le Page and Alison Flood. To read about these subjects and much more, you can subscribe to New Scientist magazine at and discount codes:NS JWST Event: