How the compass unlocked the world | Small Thing Big Idea, a TED series 🎥 Educational Informational Videos | Channify

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"Everything that we think of as world history would not have taken place without the compass." TED science curator David Biello explains how the device changed our relationship to the world. Small Thing Big Idea, a TED original series, celebrates the lasting genius of everyday objects so perfectly designed that they changed the world around them. Check out more here: https://go.ted.com/STBI and subscribe to our channel here: https://www.youtube.com/TED

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