Explainer

From undersea coral canyons to deep northern woods, these seven places deserve to be part of the president’s legacy.

Can President Obama finally end the debate over drilling in northeastern Alaska?

Protecting umbrella species can help conservationists get the most bang for their bucks.

These toxic chemicals are so common in consumer products and manufacturing that they’re practically everywhere—including inside our bodies.

Southern Resident orcas face many threats in the Northwest, but giving them more salmon could remedy most of them.

How communities of color facing the brunt of pollution launched the movement—and where it’s headed.

A practical and philosophical guide to neutralizing your carbon footprint.

America is facing its second lead crisis. This time around, the effects are less obvious, but no less worrying.

The resulting loss to life, livelihoods, and the environment hasn't slowed offshore drilling in the Gulf of Mexico. But it should.

You may have never heard of them, but there are hundreds around the world. Find out what makes this specific type of reserve so special.