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.
February 26th, 2015
Episode 561 of 681 episodes
Dr Karl answers listeners' questions about the world of science -- including the evolution of butterflies, the mechanics of learning languages, and what would happen if the moon vanished.
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