Chris Smith and Kat Arney with guests Richard Hollingham, Daniel Green and Tim Revell answer your questions on lightning and gravity. Plus science news. Show more
Discover 11,128,835 listings and 279,586 playable programmes from the BBC
Chris Smith and Kat Arney with guests Richard Hollingham, Daniel Green and Tim Revell answer your questions on lightning and gravity. Plus science news. Show more
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