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Bali's Green School wants to change the way kids learn: "Our students will have a soul."

Students swap cell phones and indoor plumbing for handwritten letters and a composting toilet named Clive

Institutional investors see such a bright future in solar power that they're willing to finance the panels on your rooftop

The complete list of Sierra's 2011 Cool Schools participants

How we surveyed and scored the schools

The best colleges help save the earth by making students stick their hands in it

Why fight like hell for a town that others have given up for lost? Because it's yours.

Without room to roam, Florida's big cats are roadkill waiting to happen

Some people scavenge food from dumpsters not because they need to, but because they hate to see so much go to waste.

The children of Central California farmworkers have launched a ground-level battle against agribusiness.

The Pentagon will no longer tolerate oil's "burden in blood."

The limestone landscape of Ireland's Burren is far from barren, with 700 species of flora

Turn a circuit sheet into a billfold

Can wilderness adventure repair the ravages of war?

A cellist's self-propelled musical tour comes with flat tires, Clif Bars, and a lot of new friends

The EPA is slow to move on pesticide blamed in honeybee collapse

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