In Photos: The Secrets of Everything
Exploring questions like whether you could survive a falling lift or why the sky is blue.

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Asteroid Impact
Greg Foot tries to work out whether we could survive an asteroid impact.
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London Lido
Greg Foot at a London Lido about to discover whether we can survive extreme cold.
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Spartan Race
Greg Foot after he had completed the Spartan Race to burn off calories after hed eaten lots of fast food.
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Greg and Dr Zbigniew
Greg Foot with chemist, Dr Zbigniew Szydlo known as Doc, in his workshop .
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Human Flesh
Greg Foot wonders what humans taste of.
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Experimenting with Fire
Greg Foot experiments with fire to discover why its hot.