Want a Big Brain? Head North

Brains are larger in those who live farther from the equator — in order to help them see better, researchers now suspect.

Scientists have long known that brain volume increases with latitude — that is, the closer one gets to the poles.

"That might be mistaken for implying that intelligence increases with latitude," said researcher Robin Dunbar, an evolutionary anthropologist at the University of Oxford. "Our data suggests that this isn't so."

Want a Big Brain? Head North - Yahoo! News