Treatment that eases bipolar symptoms in humans stops risky behavior in infected sticklebacks.
The subterranean rodents have little use for vision, but their magnetic sense tells them which direction is which.
Separate subspecies of the fork-tailed flycatcher make different trill sounds with their wing feathers.
The bright flowerlike symmetry of Australia’s northern jeweled orb-web spider lures in hungry prey.
The discovery raises hopes that chimps can adapt to threats such as climate change.
Finding suggests "megapredators" may have been more common in Mesozoic Era than previously thought.
Alligator blood inhibits a key toxin in the venom of vipers such as rattlesnakes and copperheads.
A new song type originated in western Canada and then spread East, replacing the sparrows’ traditional song.