American cities with the biggest buildings and the smallest carbon footprints.
America's Greenest Skylines
America's Greenest Skylines
(via cleantechlawandbusiness.com)
Submitted by tinder.stix on Sun, 2008-04-27 04:54. | Tags: architecture | carbon footprint | carbon offsetting | climate change | conservation | environment | green building | green design | green technology | zero emissions