In the world of agriculture, a primary goal is maintaining genetic varieties necessary for evolution, be it crops or ...

Wildlife in the Grand Canyon is exhibiting unusual behaviors raising questions among scientists about potential environmental changes disruptions in food chains or shifting migration patterns. From ...

If the Grand Canyon's beauty has captured your heart, find even more magic at some of America's other canyon-filled national ...

WASHINGTON (AP) — Democratic U.S. Rep. Raúl M. Grijalva of Arizona, who championed environmental protection during his 12 ...

Jack Dykinga won a Pulitzer in Chicago, then came West for a celebrated career in nature photography. And at age 82, after a ...

As the warmer weather returns to the Valley, more people will head out on the hiking trails or want to take a dip in the pool ...

Jack Dykinga won a Pulitzer in Chicago, then came West for a celebrated career in nature photography. And at age 82, the Oro Valley resident is still out there shooting.

Some 1,000 NPS employees were fired, and hiring for seasonal positions was delayed. Here's what to know about the impacts already being felt at parks, and what it could mean for the busy season.

Thousands of probationary federal employees received termination notices. Many were doing crucial work at science-related agencies.