Robert Sapolsky talks about what causes stress and stress-related illness in humans.
Diana Nyad talks about chasing an extreme dream: swimming from Cuba to Florida at TedMed 2011.
James Randi’s talk at TED in 2007 is the very essence of his view on psychics and scepticism.
ABC Science Show reporter Daniel Keogh shares some strange facts about placebos.
James Randi talks about the situation of alternative treatments in Norway.
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