|Science & Medicine||177|
5 live's science podcast, featuring Dr Karl, plus Dr Chris and Naked Scientists Chris Smith and Kat Arney with the hottest science news stories and analysis.
December 4th, 2012
Episode 231 of 684 episodes
Bacteria on the teeth, the age of the Sun and what's it called when you're on a train and another train moves and you think it's your train that's moving? Dr Karl and Dr Rhod wrestle with your science queries. You can send your questions to UpAllNight@bbc.co.uk anytime, just put Dr Karl in the subject line.