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 - The End of Nature .

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 a common call to action: cutting carbon 80% by 2050.

Starting in 2008, 350.org has built upon Step It Up's model of creative activism and is making it global. Through 350.org, the team has expanded to include young people from all over the world.

Moving forward into 2011, the 350.org team is becoming more global, more cutting-edge, and more focused on building an unstoppable movement for climate solutions that they hope will be impossible to ignore.