350.org is building a global climate movement. Their online campaigns, grassroots organizing, and mass public actions are coordinated by a global network active in over 188 countries. The number 350 means climate safety: to preserve a livable planet, scientists tell us we must reduce the amount of CO2 in the atmosphere from its current level of 400 parts per million to below 350 ppm. 350.org supports the global grassroots movement that holds our leaders accountable to the realities of science and the principles of justice. That movement is rising from the bottom up all over the world and is uniting to create solutions that will ensure a better future for all.