Quick Facts

1. 350.org is an international campaign dedicated to creating an equitable global climate treaty that lowers carbon dioxide below 350 parts per million.
2. 350 is the number that leading scientists say is the safe upper limit for carbon dioxide--measured in "Parts Per Million" in our atmosphere. 350 ppm--it's the number humanity needs to get back below as soon as possible to avoid runaway climate change.
3. 350.org is coordinating an international day of action on October 24, 2009 at hundreds of iconic places around the world - from the Taj Mahal to the Great Barrier Reef - we will spark a global movement that will unite the public, media, and our political leaders behind the 350 goal.
4. 350.org was launched in March 2008 by Bill McKibben and the team of young organizers behind 2007's successful Step It Up campaign.
5. Our work is only possible because of our network of friends and allies around the world, including major international NGOs and local, grassroots organizations.

For more frequently asked questions, please see the 350.org Understanding 350 section.