New research from Kelly Zamudio at The University of Texas at Austin and an international team finds climate change threatens ...

Squat rhinos lived in North America about 12 million years ago, congregating in huge, water-bound herds much like modern hippos.

On remote islands in the Gulf of California, scientists uncovered a surprising twist in rattlesnake evolution: simpler venom ...

Researchers created 3D models of ancient tracks in Oregon’s John Day Fossil Beds National Monument. The study revealed a ...

According to one app for nature observers, it's the most commonly seen creature in California: the western fence lizard. Why?

Four critically-endangered Western Santa Cruz Galapagos tortoise babies made their debut at the Philadelphia Zoo on Wednesday ...

Giant kangaroos stuck close to home and went extinct when climate change caused that home to disappear, according to a study ...

Aerial observers from the Center for Coastal Studies in Provincetown on Friday spotted a previously undetected North Atlantic right whale mother and calf in Cape Cod Bay.