Magpie personality traits differ according to their parents' hormone levels.
Contrary to popular belief, sugar (alone) doesn't rot your teeth.
Spacesuits get a makeover and shed some pounds for a new streamlined look.
Chameleons are nature's mood ring; their color reflects how they're feeling.
Sit tight! Movement triggers neurons that dull your hearing.
"Extremophile" bacteria might be able to clean up toxic nuclear waste sites.
Following the Permian mass extinction, the surviving species rapidly diversified.
Genghis Khan fathered an empire in more ways than one.
Thanks to human ingenuity, things get even more bitterly cold!