Advocates say Southern sea otters are thriving in California’s Elkhorn Slough, but could face new risks if a proposed law change weakens the Endangered Species Act.

Decades ago, India’s tigers were on the brink of extinction. Slowly, their numbers have rebounded. But that ecological success has prompted a dire problem—and a race to save many of them from genetic ...

The dinner fork is one of the most common fixtures at tables worldwide—so ordinary, so unthreatening, that few give it a second thought. But for centuries, the fork was condemned as a symbol of ...

These are 14 of the most epic single-day and multi-day hikes in the U.S., rivaling Yosemite, Arches National Park, and the ...