Why do we get goosebumps?

27 March 2015
Presented by Chris Smith, Redi Tlhabi

1024px-2003-09-17_Goose_bumps.jpg

Goose bumps

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What causes goosebumps? How close does lightning need to be to hurt you? Where is Voyager? What causes yawning? How do we perform automatic behaviour?

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