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How Things Spread

What makes an idea, a brand, or a behavior catch fire? This hour, TED speakers explore the mysteries behind the many things we spread: laughter and sadness, imagination, viruses and viral ideas.

Electric Counterpoint (Movement 3) Steve Reich
We're All Connected Medeski, Martin & Wood

Historian Yuval Harari speaking at TEDGlobalLondon. James Duncan Davidson/TED hide caption

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Why Did Humans Become The Most Successful Species On Earth?
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Spread It Around Johnny Paycheck