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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.
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 decides to build a rocket powered by toffee and then thinks it would be a good idea to ride it.