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Mr. Green helps a reader choose the greenest lawnmower

Mr. Green answers: "Should I replace my washing machine?"

Rx against street violence: scuba

A father and son climb El Capitan

In conversation with a vegan ultra ultramarathoner

A stroll through the woods can inspire, but to experience nature as your fleet-footed ancestors did, lose the clunky shoes

What makes a community livable? How about getting rid of cars?

How a pedaling purist learned to love (or at least not be so embarrassed by) electric bikes

Chart a new course for your paper maps by weaving them into a sturdy, multihued basket

Can photos of America's natural wonders inspire a cultural cease-fire?

The cleanup is winding down, but the question remains: Would you eat an oyster from the Gulf of Mexico?

Exploring one of the longest and deepest slot canyons in the world

Transforming waste into resources

The Tasmanian devil is the largest carnivorous marsupial

Horticulture experts recommend some offbeat but easy-to-grow fruits and vegetables

Conservationists, the Olympics, and an indignant porcupine keep mountaintop-removal coal mining out of a wildlife paradise

The host of the Travel Channel's Bizarre Foods roams the planet to taste dung beetles, tarantulas, and scorpions.

We asked sanitation experts to name their favorite planet-preserving solutions

They suck blood, spread disease, eat their mates, and inspire great horror films. But insects need protection—maybe even a little love.