Signs along Highway 101 north of San Francisco repeatedly tell drivers they're traveling the “Redwood Highway” — but only at Richardson Grove State Park, just north of the Humboldt County line, does ...

Ignoring opposition from states, environmentalists, and private property owners, in October 2007 the Department of Energy designated a vast, 45-million-acre area in southern California and western ...

An analysis of oil and gas pipeline safety in the United States reveals a troubling history of spills, contamination, injuries and deaths. This time-lapse video shows pipeline incidents from 1986 to ...

A program known as “Wildlife Services,” a unit of the U.S. Department of Agriculture, has long operated secretively for a reason: Its actions are incredibly brutal and inhumane to animals, from ...

Gentle and playful marine mammals, Florida manatees have come to represent the amazing biodiversity of Florida. With their large size, slow-moving nature, and fondness of seagrass, it's easy to see ...

For every county in the United States, the map below shows information on all the animals and plants protected under the U.S. Endangered Species Act as threatened or endangered. To see the number of ...

When a Chiricahua leopard frog wants attention, it snores — at least, its distinctive call sounds like a snore. But the sound of snoring around desert streams, springs and even stock tanks is a lot ...

The tiny delta smelt is one of the best indicators of environmental conditions in the San Francisco Bay-Delta, an ecologically important estuary that is a major hub for California's water system — and ...

The Miami tiger beetle — a diminutive, iridescent native of Florida — was first discovered and described in the 1930s. But after its discovery, it wasn't seen again for six decades, when it was found ...

The country has learned a lot since Rachel Carson's 1962 book Silent Spring alerted us to the hazards of poisonous chemicals. But pesticide use still poses major threats to imperiled wildlife and ...

The yellow-billed cuckoo is sometimes called the "rain crow" because its song is often heard just before thunderstorms or summer showers. But this rare bird raises its voice less and less often in ...

Thanks to their sand-colored plumage and stop-and-go dashes across dunes, piping plovers are usually identified by their bell-like whistles before they're seen. But these birds' camouflage techniques ...