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Jem Stansfield builds a microwave death ray, Liz Bonnin takes on the nature versus nurture debate with monkeys, and Dr Yan Wong uses office chairs to explain how gyroscopes work.
Jem Stansfield tests new braking systems, Liz Bonnin looks into the origins of speech and Dallas takes part in a sea race with Dame Ellen MacArthur.
Jem Stansfield puts spider silk to the test, Liz Bonnin joins the RAF's flight school, Dr Yan Wong experiments with sodium acetate and Dallas Campbell reveals the science of magic.