Your Christmas science questions and a sprinkling of festive fun as Julia Ravey hears about a planet where it rains rubies, robots that feel pain, and a crab with a hairy chest! Show more
Discover 11,128,835 listings and 280,378 playable programmes from the BBC
Your Christmas science questions and a sprinkling of festive fun as Julia Ravey hears about a planet where it rains rubies, robots that feel pain, and a crab with a hairy chest! Show more