Topping the list with its Sustainable 2nd Century , the university takes its energy and waste management, transportation around campus (you'll see a LOT of bicycles), and food services pretty seriously. The UC Davis West Village housing complex aims to reach a goal of net zero energy - and will be the largest residential community in the U.S. to do so.

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Not only has Georgia Tech's campus integrated sustainable design and construction, but the university also uses environmentally friendly cleaning products, requires that all its vendors do the same. Every student is required to take an environmentally marked course before graduation. The campus collects rainwater, recycles at football games and dining hall waste - and the annual Earth Day celebration, which is open to the public, is a huge deal!

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Between eco-friendly buildings, and prodding students and alums to explore eco-friendly business ventures, Stanford also has a lot going on in the green arena. The campus also has a huge Sustainable IT program implemented on campus, designed to reduce the amount of greenhouse gas emissions generated by its IT infrastructure. And then there's also the on-campus organic garden - about 40% of Stanford's Dining produce is grown either on campus or within a 250 mile radius.

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Water and energy conservation, recycling, composting and waste reduction are important here - but for students, the most fun is in the self-service bicycle repair stations that are dotted around campus, and equipped with an air-pump and tools to keep you rolling on environmentally-friendly wheels.

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From green construction projects to recycling leftover kitchen cooking oil into fuel for powering campus shuttle buses, the University of Connecticut is also keeping up with the game. Students are heavily involved with recycling projects on campus - and the Earth Day Spring Fling is a fun way of continuing to spread the eco-friendly awareness.

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