All carnivorous mammals of Madagascar descended from a common ancestor.

Arrival of snakehead fish raises question of invasive species, weeds and exotic species. Meet 8 of the worst.

Snake eats big crabs by tearing them apart, breaking scientific paradigm. Emily Post would definitely approve, however.

Tyrannosaurus rex was no sprinter, new biomechanical study finds.

Malaria parasite changes sex ratio to promote reproduction.

The science of Halloween: bats, brains and cemetaries. Mourn the bats. Earn some interest at the brain bank. Prowl the boneyard!

Does napping make you smarter? This bird thinks so!

Leaf-cutter ants invented farming many million years ago, when they domesticated fungus. Meet the first mushroom farmers!

So what’s the deal with the simple water spider? This eight-legged marvel speeds across the water fast enough to escape predators, find prey, and chase off intruding spiders. But how does it move? It must be pushing the water backwards, but what is doing the pushing?