The Human Spark

A Matter of Size

Clip: Season 1 | 3m 3s

A look at the brains of a rat, monkey, chimp and human and a discussion of why some brains are bigger than others.

Aired: 01/01/10

Rating: NR

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Major funding for THE HUMAN SPARK is provided by the National Science Foundation, and by the Alfred P. Sloan Foundation. Additional funding is provided by the John Templeton Foundation, the …