Naked Scientists

In this episode of Ask, if the universe is expanding, what's it expanding into? What's the relationship between descended testes and the chance of having children? Why does more urine come out when I stand rather than sit on the loo? How do surgeons join the cut ends of a colon together? At what age is it suitable to start taking creatine supplements? Why do I wake up in the middle of the night? Like this podcast? Please help us by supporting the Naked Scientists

Trent wants to know why trees of the same species, in the same geography, seem to change the colour of their leaves at different rates. He's even noticed differences on branches of the same tree! James Tytko sought to provide an answer, with help from Charles Shi, botanical horticulturalist at the Royal Botanic Gardens, Kew. Like this podcast? Please help us by supporting the Naked Scientists

In the news podcast, the US and the UK have forged a long-term nuclear alliance - but what will it really deliver? We also examine a new study on whether smoking cannabis makes it harder to get pregnant. And we'll be hearing from a forensic scientist who is using detective work to rid our oceans of plastic. Like this podcast? Please help us by supporting the Naked Scientists

To celebrate 10 years since they were first detected, we're examining gravitational waves. What are they? And how do we find them? Like this podcast? Please help us by supporting the Naked Scientists

On Ask! the Naked Scientist this week: What led to the 'leopard spots' found on Mars? What is the purpose of finger and toe nails? How do bone conduction headphones work? Why do non-magnetic metals sometimes interact with magnetic objects? What role did our teeth play in our evolution? What's the cause of my unintended weight loss? Could astronauts create an environment for life on Mars? What's wrong with a pear shape? Like this podcast? Please help us by supporting the Naked Scientists

Sva writes in, asking whether stories of snakes being tamed by human milk have any grounding in science. James Tytko took on the question with the help of herpetologist Fortunate Mafeta Phaka, and Angela Julian of the Amphibian and Reptiles Group of the UK. Like this podcast? Please help us by supporting the Naked Scientists

In this edition of The Naked Scientists, the strongest hint yet of life on Mars. Should we get excited? Or is it another red herring? Also ahead: The first new UK-wide study of babies in 25 years. We'll find out why it matters. Plus, an ancient lizard-like fossil is discovered on the coast of Devon. We'll uncover the significance... Like this podcast? Please help us by supporting the Naked Scientists

With only a few walls between an astronaut and a rapid death, what do we know about the various dangers to the human body during space travel? Chris Smith spoke with Mark Shelhamer, a professor of Otolaryngology - Head and Neck Surgery at John Hopkins Medical School - about which space hazards are deemed most pressing for our up-and-coming astronauts... Like this podcast? Please help us by supporting the Naked Scientists

What does it take to build a society in space? Today on the Naked Scientists, we explore efforts to make microgravity amenable to humans; including how to harvest energy, make fresh food, and even birth the next generation of space explorers... Like this podcast? Please help us by supporting the Naked Scientists

This month, as the eLife Podcast hits its century, we hear how getting frog dads to cross-foster tadpoles has revealed the way in which some frogs come by their microbiomes, the ants that do gene therapy, signs that disease causes a breakdown in nutrient exchange between the elements of the microbiome, how fungi reprogram immune cells to cause over-reactions in sepsis, and new insights into how tapeworm larvae in the brain cause seizures... Like this podcast? Please help us by supporting the Naked Scientists