No, they’re not creatures of myth or cartoons. The “unicorns of the sea” are real — and they’re incredible.

A federal judge has allowed American Prairie’s bison to stay for now, but the larger fight over native wildlife, public lands, and the livestock lobby’s power is far from over.

Center for Biological Diversity: LOCHIEL, Ariz.— Protesters today climbed into an ancient cottonwood tree in Arizona’s San Rafael Valley to stop the Trump administration from cutting it down for const...

The Lower Rio Grande Valley National Wildlife Refuge is home to some of the United States' most critically endangered species. But now the U.S. Fish and Wildlife Service plans to hand over more than 7...

A similar case resulted in a $5,000 fine.

Built by members of the team behind NOAA’s Climate.gov, the new nonprofit resource is supported in part by more than 2,500 small donations from people who want reliable climate science information to ...

The voting rights they marched for are being stripped away right now. We're going back. Are you coming?

National Park Service communicators no longer respond to SFGATE media requests.