Math teacher Simon Hauger challenged his high school students to build a green car and inspired them to get better grades in the process.
Brent Green is helping to make his community safer and more beautiful by planting hundreds of trees.
Colin Beavan documents the process of leavening to live simply in a new book and film.
Why this country singer always feels at home in the Smoky Mountains
In the wake of Katrina there was an unexpected enemy—mosquitoes. And an even more surprising solution.
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