I am making a personal appeal to you on behalf of over 200 federally protected birds (Cliff Swallows) that have been killed by CalTrans since early April of this year.

Cliff swallows are remarkable birds that migrate thousands of miles every year from South America to California to breed and raise their young at sites they have used for decades.

Waterfowl are flying south weeks later than they did only a decade ago. And oysters are dying from the increased acidity of salt water, an effect caused by the ocean's absorption of carbon dioxide from the air. It's clear: We are already facing a crisis and we need to address it now.

Mexican gray wolves are an icon of the American southwest. The 15th anniversary of their initial release from captivity into the wild is an important time to reflect on how far these wolves have come.

An estimated two million wolves once roamed freely across North America, including most of the United States. But bounties, a federal extermination program and human settlement drove the species to near extinction in most of the lower 48.

Recently, African lions took one step closer to receiving much-needed protections from trophy hunters still eager to kill them despite their dwindling numbers. Of even greater importance is the fact that this announcement opens the door for everyone who loves big cats to take action.

Spotted owls, Florida panthers and California red-legged frogs all have something in common -- they're endangered species and they can't vote or make campaign contributions.

LOS ANGELES -- Federal wildlife investigators say they've broken up an international smuggling ring that trafficked in sawed-off rhinoceros horns for ...

A New Orleans open house held by Louisiana's coastal restoration authority last week on a draft of the state's 2012 Master Plan for a Sustainable Coast drew mixed, earnest and sometimes vehement comments.

The Post story included the what, who, where and how of basic journalism. What was missing was the why. Why is sea level rising and eroding the beach in Chincoteague?

SUFFOLK, Va. -- A wildfire that burned thousands of acres in southeastern Virginia's Great Dismal Swamp over more than three months has been extinguis...

PASADENA, Calif. — Wildlife advocates appeared in federal court Tuesday seeking to stop gray wolf hunts that are already well under way in the N...

WASHINGTON -- Environmental groups filed suit against the Obama administration on Wednesday, alleging that U.S. federal officials illegally allowed wo...

A perfect natural laboratory, the Southeast is the world's center of aquatic biodiversity, with more species of freshwater mussels, snails and crayfish than anywhere else on Earth. Unfortunately, it's also been an epicenter of extinction.

Decades of commercial overfishing, along with oil and gas exploration and refining, hurricanes and last year's BP spill are among the misfortunes facing fish in the Gulf.

The evidence is clear: oil companies cannot be trusted with our treasured places -- and that includes the Arctic refuge.