climate change causes swelled heads!

Jessica Ash and Gordon Gallup studied 109 fossilized skulls from different lattitudes to determine that “climate may have been an important selective force behind the evollution of human cranial capacity,” according to Gallup, who theorised that changes in global temperature could account for as much as 50 per cent of the variation in headmeat.

“Specifically we found that as the distance from the equator increased, north or south, so did brain size,” he said.

The researchers will publish their study in the spring edition of Human Nature.

Wired, 22 Mar 2007