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 the aspen grove in Utah weighs 35 times more than a blue whale and has lived for thousands of years. The team discovers why this incredible life form - a forest of genetically identical, connected trees - may now be at risk, and thanks to sound artist Jeff Rice, we get to experience how it may “hear” the world around it. 

We’ve all seen our sleeping pups run in mid-air as they dream of chasing squirrels, but did you know that octopuses dream too? And, as the team learns, by observing one very special octopus, scientists now believe they also have nightmares.

Reaching out to aliens… could we trust them? The team discusses some of the concerns around making contact and suggests some fantastic reads on the subject.

Always struggled with “Dry January”? Your prayers may finally have been answered. Sam Wong tests a new type of non-alcoholic drink… that still gets you tipsy. 

On the pod are Rowan Hooper, Clare Wilson, Michael Le Page, Alison Flood and Sam Wong. To read about these subjects and much more, you can subscribe to New Scientist magazine at newscientist.com.

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