Latest Updates

How (and why) we came up with our list of America's greenest campuses

The complete list of Sierra's 2010 Cool Schools participants

Our fourth annual list of America's greenest campuses

Our fourth annual list of America's greenest campuses

In New York's urban core, pastoral dreams take root

Jettison the tent, the candle lantern, and that copy of Moby-Dick. Ultralight through-hiking takes you farther, faster.

NFL's greenest star aims his eco-efforts at underprivileged kids

When you're poor, the environmental movement doesn't stop at simple things like pollution

Angelenos share the San Gabriel Mountains with miners, nudists, anglers, and the occasional murderer.

If you think Walden Pond is transcendental, check out Maine's North Woods

A deal that one activist called Southern California's Louisiana Purchase will make life easier for game animals and other species

When climbers die, is the camera partly to blame?

"We are hardwired to be explorers"

It's easier to get into Heaps Canyon than to get out

Experts serve up their favorite herbal brews, all steeped in sustainability

Why photographer Clark Little risks his neck to share a vision of the natural world that few ever see for themselves

A snowkiting newbie rises from the wreckage

Working hard outdoors is fun. Even in the heart of a midwest winter.

The mere thought of heaps of disposable cups, replete with congealing backwash and reconnoitering insects, can spur even the most environmentally indifferent into action.