Scientists have found a way to make organisms not need food at all. Bacteria usually rely on some sort of sugar to survive, but a group at the Weizmann Institute of Science in Israel made a population of a common bacteria able to feed on carbon dioxide, very much like plants do. They did this by genetically modifying how the bacteria digests its food, and then putting them in a tank with very little food - sugar - and a lot of carbon dioxide. In only a few hundred generations, these bacteria evolved to feed on the carbon dioxide in the air instead. Amalia Thomas reports... Like this podcast? Please help us by supporting the Naked Scientists

And now onto something out of this World. For the first time, scientists have found evidence of a giant, Neptune-size planet orbiting a white dwarf star. This was previously not thought to be possible due to the destructive energy low-mass stars, such as our Sun, emit to the surrounding solar system as they age and expand. The findings, published in Nature by a team from Warwick University, are particularly interesting because they indicate what might happen to our solar system billions of years from now. Nadeem Gabbani speaks with Ingo Waldmann of University College London for comments on the... Like this podcast? Please help us by supporting the Naked Scientists

Join the Naked Gaming Podcast team for a special bonus episode, with an in-depth interview with the voice of Ash Ketchum from the pokemon TV series. What was it like getting the job, where did the voice come from, and which other characters did she play? Like this podcast? Please help us by supporting the Naked Scientists

Taking a leaf from the holly and the ivy's book, Katie Haylor explores the virtue of being evergreen...? Like this podcast? Please help us by supporting the Naked Scientists

How did the popular concept of Christmas trees get started? Extolling the virtues of a real tree, including a superior short-term carbon footprint and a nicer smell, Adam Murphy explains how the tree tradition began... Like this podcast? Please help us by supporting the Naked Scientists

The lung disease tuberculosis is still one of the world's top ten causes of death. And while it's completely treatable, patients need constant monitoring to make sure the treatment is working. The monitoring is fairly labour-intensive: it requires taking a sample of phlegm and counting the bacteria inside by eye under a microscope. It's a treatment bottleneck. But now, some engineers from Cambridge Consultants have been developing a technology to get rid of that bottleneck using AI - as Phil Sansom found out from developer Matthew Murchie... Like this podcast? Please help us by supporting the Naked Scientists

Measles was thought to have been eradicated from the UK in 2017, but following an outbreak the very next wear, we lost this elimination status. Measles is a highly infectious disease that can quickly spread through the unvaccinated population with a high complication rate involving pneumonia, gastroenteritis and even encephalitis. And having recovered from that, there's a further sting in the tail: measles virus suppresses the immune system for years after the infection clears. Amalia Thomas hears why from Velislava Petrova, at the Wellcome Sanger Institute in Cambridge, who has discovered the... Like this podcast? Please help us by supporting the Naked Scientists

Mental health awareness has been improving in the past few years, but there still isn't universal, accessible support for vulnerable people. A recent study carried out by members of the University of Cambridge might help develop targeted support: it showed that the environment in which people live is correlated to risk of depression in men, but not in women. In contrast to men, women that live in deprived areas are more likely to develop anxiety issues. Amalia Thomas got the details from the lead author of this study, Olivia Remes... Like this podcast? Please help us by supporting the Naked Scientists

In 2001 Lawrence Jones set out on a freeskiing trip with his mates. It was not the first adventure trip they had been on, but it was the last one that any of them took lightly again. An avalanche turned Lawrence's holiday from fun to tragedy within the space of half an hour. On the Naked Scientists podcast episode "How to survive an avalanche" we discuss his story, and the science behind it, with two avalanche experts.Now, here's the complete tale of his lucky escape from one of the most terrifying forces of nature - as told by Lawrence Jones himself... Like this podcast? Please help us by supporting the Naked Scientists

The UN Climate Change Conference - COP 25 - has been taking place in Madrid. The purpose of the conference is to take the next crucial steps in implementing the global carbon-cutting proposals agreed 4 years ago in Paris. But where are we on the road towards a carbon-neutral future, and what's it going to take to get there? Chris Smith talks to two climate change experts, Camrbidge University's Eric Woolf and Eliot Whittington... Like this podcast? Please help us by supporting the Naked Scientists