Cat Deeley is in the studio to chat to Alex and Matt. Plus Dr Xander Van Tulleken reveals secrets about the human body and George McGavin goes in hunt of a clever caterpillar. Show more
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Cat Deeley is in the studio to chat to Alex and Matt. Plus Dr Xander Van Tulleken reveals secrets about the human body and George McGavin goes in hunt of a clever caterpillar. Show more
BBC One
