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Barbara Pike has a confession to make (but it’s not such a bad one). TED, a worldwide organisation which brings together speakers on education, business, science, tech and creativity, has a Youtube channel entirely devoted to short educational videos on a wide range of topics. Her confession is that she's been slightly addicted to watching them lately, finding herself lost in a spiral of absorbing information on everything from how you digest food to how people lived in ancient Rome. They’re fascinating, and she strongly suggests you try them out.