20131213_ted_02.mp3?orgId=1&topicId=1008&d=514&p=57&story=248193368&t=progseg&e=248190652&seg=2&ft=nprml&f=248193368
Part 2 of the TED Radio Hour episode Spoken And Unspoken .
About Mark Pagel's TEDTalk
Biologist Mark Pagel says our complex language system is a piece of "social technology" that allowed early human tribes to access a powerful new tool: cooperation.
About Mark Pagel
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