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.
December 6th, 2012
Episode 233 of 683 episodes
Dr Chris, the Naked Scientist stands in for Dr Rhod tonight and fields questions about norovirus, why humans have rhesus positive and negative blood and wandering giant planets.
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