A new study suggests the odd appendages first appeared in the fish's ancestors around 72 million years ago. Today, females ...
Maintaining connections between natural habitats may support beneficial microbes that help wildlife defend against disease.
The kea gained fame for learning to use a pebble to groom himself. Scientists were astounded by his next innovation.
The northern snakehead is one of the most unsettling invasive species in America: a fish that can wriggle across land, ...
Beneath the lush rainforests of the Yucatan Peninsula lies a hidden, subterranean world: a vast network of flooded sinkholes ...