Researchers found that female mice, despite ongoing hormonal fluctuations, exhibit exploratory behavior that is more stable than that of their male peers, countering the belief that the hormone cycle in females causes behavioral variation that could throw off results.

How squid and octopus get their big brains.

Research comparing 19th- and 21st-century Americans finds a half-hour decline in physical activity. Blame it on planes, trains, and automobiles.

Harvard study challenges lateral-to-sagittal shift in mammal spine evolution.

Sapria genome shows astonishing gene loss and gene theft.