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.
September 27th, 2012
Episode 207 of 684 episodes
Dr Karl is joined by human evolution and anthropology expert Elizabeth Hagen and astronomer Simon O'Toole. They answer questions about Halley's Comet, the Mars Rover and how do we know what colour dinosaurs were?
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