350.org is building a global grassroots movement to solve the climate crisis. Our online campaigns, grassroots organizing, and mass public actions are led from the bottom up by thousands of volunteer organizers in over 188 countries.

350 means climate safety. To preserve our planet, scientists tell us we must reduce the amount of CO2 in the atmosphere from its current level of 392 parts per million to below 350 ppm. But 350 is more than a number—it’s a symbol of where we need to head as a planet.

350.org works hard to organize in a new way—everywhere at once, using online tools to facilitate strategic offline action. We want to be a laboratory for the best ways to strengthen the climate movement and catalyze transformation around the world.

We operate at a large scale to take on the world’s greatest challenge. In October of 2009 we coordinated 5200 simultaneous rallies and demonstrations in 181 countries, what CNN called the ‘most widespread day of political action in the planet’s history.’ On 10/10/10, we organized a day of climate solutions projects–from solar panel installations to community garden plantings–and changed communities from the bottom up with over 7000 events in 188 countries. And at the end of last year, we coordinated a climate art project so large it had to be photographed from a satellite in outer space.

In 2011, we are building people power in every corner of the planet. With a huge mobilization planned for September and a series of bold campaigns in strategic countries around the world, we’ve got big plans. With the help of millions of people, we’ll create a wave a hard-hitting climate activism all over the world that can lead to real, lasting, large-scale change.

We think we can turn the tide on the climate crisis–but only if we work together. If an international grassroots movement holds our leaders accountable to realities of science and principles of justice, we can realize the solutions that will ensure a better future for all.