Until the Panamanian isthmus formed about 2.8 million years ago, North and South America were isolated continents with unique ...

A piece of performance art arriving in Brooklyn this fall explores the complex history and hopeful future of the U.S. through ...

Birds have a lot to do in their short lives: defend territories, build nests, raise chicks and feed themselves. But the toll of these activities may be greater for female birds than for male birds. A ...

By Marta Serafinko July 24 (Reuters) - High up on volcano summits, the Andean leaf-eared mouse is showing how life can thrive ...

The idea that local beaches are suddenly infested with bloodthirsty man-eating great whites is total "garbage," according to ...

Ancient fish-like animals began exploring shallow waters about 400 million years ago. These early tetrapods, with sturdy fins ...

Arizona has 29 species of bats. Here's everything to know about why they are good to have around and why you shouldn't handle ...

Officials will investigate a video of a individual repeatedly kicking a sea lion at La Jolla Cove. Activists are calling for ...

A Mesa photographer captured rare video of river otters in the Salt River, where experts say the elusive mammals signal a ...

As Martins careens through the mind-boggling diversity of parasites, he delivers a seemingly endless array of eye-popping ...

CAPE TOWN, South Africa (AP) - A South African couple found themselves in a rare situation when they witnessed a humpback ...

By cannibalizing their siblings in the womb or avoiding meat-eating pliosaurs, fearsome carnivores like the megalodon ...