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Heart racing, palms sweating, skin prickling are some of the things we experience when we feel frightened. So how do humans cope with one of our strongest emotions - fear? Carrie Gracie takes an unflinching examination of fear with René Hurlemann, Lucy Bolton and Liana Zanette. Canadian biologist Liana Zanette explains breakthrough research on how intimidation changes the ecosystem. German neuroscientist René Hurlemann tells the story of very rare individuals who go through life without feeling fear. And horror film expert Lucy Bolton asks what scares us in the cinema, and why we deliberately seek to be made afraid. Photo: A man holding a child's hand in a dark tunnel, Credit: Jay Directo/AFP/Getty Images
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