Science & Medicine,
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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.
March 24th, 2011
Episode 33 of 684 episodes
How do birds hear if they have a hole through their heads? Where does matter come from? Just some of the questions put to Dr Karl this week for the Up All Night science phone in.
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