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For the last 17 years, AmeriCorps members have pledged to uphold their duties as public servants, vowing to "get things done for America—to make our people safer, smarter and healthier.” But a new type of volunteering in Montana is adding one more thing to that list: making America greener.

A look at how an innovative breakthrough in light absorption and utilization could effectively triple the productivity of photosynthesis.

A look at the rapidly expanding applications of biodiesel from the 2011 Natonal Biodiesel Board's Conference and Expo.