As we approach the second round of the UN climate talks, Bill McKibben and 350.org are putting on what may be the world's biggest art exhibition, ever. With many works viewable from space, the campaign urges world leaders to reduce acceptable carbon emissions from 388 t0 350 parts per million — scientists' safe target for stabilizing CO2 levels in the atmosphere. So far, pledges made by nations are nowhere near what's needed to put a lid on global warming.
Delta del Obro, Spain
Santo Domingo, Dominican Republic
New Delhi, India
Mexico City, Mexico
Santa Fe, NM