Broken Bones and Glowing Worms

22 January 2010
Presented by Chris Smith, Sue Marchant.

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How long to bones take to heal? Are healed bones stronger than they were before? How do glow worms glow? We tackle these bright questions on this week's show as well as reveal what a headache is, how to cure a hangover, the strength of atomic bombs and how trees and coral can tell us about past climates!

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