
Humans never run out of things to say. We explain, we cajole, we gossip, and we flirt--all with the help of language. But how in the space of several million years did we evolve from an ordinary primate that that could not talk to the strange human primate that can't shut up?...

Humans never run out of things to say. We explain, we cajole, we gossip, and we flirt--all with the help of language. But how in the space of several million years did we evolve from an ordinary primate that that could not talk to the strange human primate that can't shut up?...