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About this episode

14 March 2025

Episode 293

The 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鈥檚 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 atmosphere, some people argue this is actually a benefit to the world鈥檚 plant life. As carbon dioxide rises, photosynthesis can increase - but only up to a point. New research shows there鈥檚 a limit to this effect and many, many consequences. One study on trees suggests rising CO2聽 levels could impact the carbon storage capacity, and the lifespan, of the world鈥檚 forests.

Our understanding of memory has been flipped on its head. Researchers have been looking into a memory illusion that warps our perception of time. In a clever experiment, they鈥檝e shown that experiencing something multiple times not only makes our memory of it stronger, but also makes us think it鈥檚 an older memory too. Find out what鈥檚 happening - and how there is no single thing as 鈥渕emory鈥.聽

Chapters:

(00:21) The future of NASA

(6:52) Photosynthesis collapse

(19:59) The mystery of memory

Hosted by Rowan Hooper and Penny Sarchet, with guests Jacob Aron, Madeleine Cuff, Sophie Berdugo, Rob MacKenzie, Gustaf Degan, Ian Billick and Alex Easton.

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