A thermal solar network using parabolic reflectors and old car parts. A oat that filters its own wastewater, has on-site wind power and educates passengers about the polluted waterway on which it floats. A car that runs on natural gas from local dairy cows. These are not breakthroughs from the world's top scientists--they're innovations from college students working with an increasing number of sustainable design programs in schools across the country.

Massachusetts Institute of Technology graduate student Matthew Orosz spent his two years in the Peace Corps in a village in Lesotho, located inside South Africa. He was impressed by a locally designed solar oven that used ...

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