Mark Pagel says early humans developed language as a tool to cooperate. But with thousands of different languages, Pagel says language also exists to prevent us from communicating outside our tribal groups.
Classicist and tattooer Phuc Tran grew up caught between two languages with opposing cultural perspectives: the indicative reality of Vietnamese and the power to image endless possibilities with English. In this personal talk, Tran explains how both shaped his identity.
Body language affects how others see us, but it may also change how we see ourselves. Social psychologist Amy Cuddy shows how "power posing" can affect our brains, and might even have an impact on our chances for success.