Beneath the tropical trees of southern Mexico, enormous shoals of sulfur mollies blanket the water surface of toxic sulfur springs, where survival depends on collective defense against relentless ...

The oceans of the Cretaceous of North America teemed with life. Gigantic fish and enormous marine reptiles hunted the Western Interior Sea. A unique new fossil demonstrates rare evidence of direct ...

A cottontail rabbit seems like the most delicate, vulnerable creature on Earth until it starts running. Even a seriously bloodthirsty fox has to reach top speeds just to have a chance of catching it.

A great kiskadee is captured mid-flight immediately after launching an unsuccessful overflight attack on a shoal of sulphur mollies. The image shows the bird with its wings fully extended as it passes ...