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Karl Linn cultivates community in his urban gardens

On its way to becoming the nation's largest grassroots conservation organization, the Sierra Club made its mark in the annals of mountaineering

Cure-all lizards! Bulldozer ants! Voracious spiders! A high school biology class finds high drama among the creepy-crawlies

Pity the poor abalone, too tasty for its own good

The effort to preserve California's Sierra Nevada won a major victory

What happens when a protected predator eats an endangered species?

The pleasures of Louisiana's Atchafalaya River Basin urge you to draw, dance, or just revel in the natural world. It's easy to forget there's a water war going on.

Sierra Club public-lands lobbying team supports grassroots activists

Paddling into Lake Superior's past

Today's movement to restore wild places began more than half a century ago in a shack in rural Wisconsin.

Earth's best friend, David Brower, 1912-2000