In the news pod, scientists in Israel discover a new part of the immune system. We'll find out why it matters. Also, the Blue Ghost mission that just landed on the Moon and could change the way we conduct Lunar exploration. And greedy labradors: we find out why dogs (and their owners) are prone to putting on weight. Like this podcast? Please help us by supporting the Naked Scientists

Is everywhere at the centre of the universe? How long do sweeteners stay in the digestive system, and what are the best alternatives? Can one black hole swallow another? Does Vitamin C help you fight flu? Why is science so hard to reproduce? Which animal only lives for one day? Dr Chris Smith and Clarence Ford have all the answers... Like this podcast? Please help us by supporting the Naked Scientists

This week, we're examining NEOs - near-Earth objects - asking whether any of them might be on a collision course with our biggest cities... Like this podcast? Please help us by supporting the Naked Scientists

Dr Chris answers science questions from listeners to TalkRadio 702, including; How does one improve short term memory, especially following a brain injury? Can retinal microchip implants cure blindess? What are the health impacts of artificial sweeteners? Like this podcast? Please help us by supporting the Naked Scientists

In this edition of The Naked Scientists: Continuous Glucose Monitors are increasingly popular. But are they feeding us dietary misinformation? Also ahead: the "sexome": scientists describe the genital microbiome, and how it might help with forensic investigations. And, we go to Wales to find out how artificial intelligence is helping dairy farmers... Like this podcast? Please help us by supporting the Naked Scientists

Garth writes in wanting to know why the prevalence of lactose intolerance is nearly 100% in countries like South Korea, but down in the low single digits in countries like the UK. James Tytko asked Mark Thomas, Professor of Evolutionary Genetics at UCL, for the answer... Like this podcast? Please help us by supporting the Naked Scientists

Incoming! NASA's acting head of planetary defence, Kelly Fast, discusses asteroids, YR2 and how to protect our planet. The UK Space Agency's head of Earth Observation and Climate, Beth Greenaway, and chief scientist, Shaun Quegan, discuss the upcoming European Biomass mission to measure how much carbon is being stored in tropical forests. And Kelly Weinersmith - co-author of A City On Mars - explains why living on the red planet will be much harder than anyone thought... Like this podcast? Please help us by supporting the Naked Scientists

We're taking you through the looking glass to explore 'mirror life': could we be about to flip biology on its head? Like this podcast? Please help us by supporting the Naked Scientists

Dan wants to know what the likelihood is of him being here if neither him, his parents, nor his grandparents had had any vaccinations. James Tytko sought to provide an answer, with the help of Helen Bedford, Professor of Children's Health at UCL... Like this podcast? Please help us by supporting the Naked Scientists

Dr Chris answers the usual spectrum of science questions from listeners to CapeTalk, including; are sweeteners bad for our cardiovascular health? If a mother has hypoglycemia while pregnant, what happens to the baby? Why did I have cravings during my wife's pregnancy? How does science track dangerous asteroids headed for Earth? Like this podcast? Please help us by supporting the Naked Scientists