The Danish island of Samsoe is 100 percent energy self-sufficient, and even generates enough energy to export some back to the mainland. How'd they manage that? Well, it doesn't hurt that there are only 4,000 people living on Samsoe, but the place is also bristling with turbines and sports a solar plant and three biomass plants. Click the Samorost-lookin' graphic above for an infographic showing how they did it.