Flickr: agfazzone

College campuses are brimming with chances to go green, from turning off lights to encouraging recycling (students move every year!) to building awareness around global issues. And given the bonds and formative experiences they engender, campus communities can be like petri dishes for a lifetime of good, responsible living.

But the deal just got a little sweeter. Climate Culture, an upstart social network built around a sophisticated footprint calculator, has launched its massive college g