This undated photo was taken of John Hinckley Jr. in front of the White House. He attempted to assassinate President Ronald Reagan in D.C. on March 30, 1981. AFP/AFP/Getty Images hide caption

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Yao honey hunter Orlando Yassene holds a male greater honeyguide temporarily captured for research in the Niassa National Reserve, Mozambique. The birds will flutter in front of people, tweet and fly from tree to tree to guide hunters to bees' nests that are hidden inside the trunks of hollow trees. This teamwork could date back thousands or even a million years. Claire Spottiswoode hide caption

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How Wild Birds Team Up With Humans To Guide Them To Honey

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What Science Says About Taking A Great Vacation

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John Searle speaks at TEDxCERN, 2013 Max Brice / Laurent Egli/TED hide caption

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Where Does Consciousness Come From?

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Ze Frank on the TED stage. Ryan Lash/TED hide caption

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Are You Ready To Take The 'Human' Test?

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Steven Pinker on the TED Stage. Courtesy TED hide caption

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How Do Nature And Nurture Combine To Make Us Who We Are?

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How Will 'Cut And Paste' Technology Rewrite Our DNA?

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Me, Me, Me: The Rise Of Narcissism In The Age Of The Selfie

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