Dr. James Hansen of NASA has suggested that

... developing this fossil fuel could mean “game over” for the climate.

http://www.greenpeace.org/usa/en/news-and-blogs/campaign-blog/keystone-tar-sands-at-the-white-house/blog/36431/

Stop Tar Sands

http://www.tarsandsaction.org/bill-mckibbens-statement-from-jail/

Earth and Stars, Fluent Mundo, 24" sq, o/c, 2008

Take and use as a poster if you like. You can email me at GregoryBotts.com for a larger size file.

350.Org

350.org was founded by U.S. author Bill McKibben, who wrote one of the first books on global warming for the general public, and a team of university friends.

Together, they ran a campaign in 2007 called Step It Up that organized over 2,000 rallies at iconic places in all 50 of the United States. These creative actions - from skiers descending a melting glacier to divers hosting an underwater action - helped convince many political leaders, including then Senator Barack Obama, to adopt our common call to action: cutting carbon 80% by 2050.