Ask the Naked Scientists

This week Clarence Ford and Dr Chris discuss NASA's DART mission to defect an asteroid, why we can't tickle ourselves, whether lung capacity affects the heart, if white skin transplanted to a black person changes colour, why some people are more ticklish than others, how scientists are able to read ancient DNA codes, why the sea is salty, and what triggers seizures? Like this podcast? Please help us by supporting the Naked Scientists

This week, Dr Chris Smith and Sara Jayne Makwala King get to the bottom of IBS, why women living together often synchronise menstrual cycles, why we get a sudden falling sensation when dropping off to sleep sometimes, and if Earth suddenly stopped spinning, what would happen first? Also, are the faces that crop up in our dreams real people we've seen before, or has our brain created people that don't actually exist? Like this podcast? Please help us by supporting the Naked Scientists

In this week's show, how scientists discover Russia's use of frog neurotoxin epibatidine to kill political opponent Alexei Navalny, why some people are more vulnerable to dental problems, why does a full bladder make me feel sick, how is gum disease linked to heart disease, where do the clouds surrounding Table Mountain go, and what is the evolutionary advantage of golf? Plus, can science and religion co-exist? Dr Chris Smith and Clarence Ford have the answers... Like this podcast? Please help us by supporting the Naked Scientists

How did life on Earth begin? Why is glass clear when sand is opaque? What is foot-and-mouth disease? Why do some people's accents change when they emigrate? What is trigeminal neuralgia? What is decided before drug trials take place? What's the difference between colloidal silver and quantum silver? Is Lyme disease contagious? And are we gaining or losing mass on planet Earth? Dr Chris Smith and Clarence Ford have the answers... Like this podcast? Please help us by supporting the Naked Scientists

Do animals enjoy views like we do? Why are some elephants born without tusks? Why do some people pass out on roller coasters? Is there a cure for dizziness? Can the brain recover if you stop drinking alcohol? Why is there a difference between the way that dogs and humans metabolise food? Did hallucinogens play a role in human evolution? Is a heart murmur a side effect of an overactive thyroid? Dr Chris Smith and Clarence Ford have the answers... Like this podcast? Please help us by supporting the Naked Scientists