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.

We believe that a global grassroots movement can hold 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 the solutions that will ensure a better future for all.

With over 4000 languages spoken around the world, words don’t always get the point across. This wordless animation explains 350.org in 90 seconds:

Read Bill McKibben’s Rolling Stone article about the terrifying new math of climate change here.
Read about basics of climate change and science behind it here

If we’re already past 350, are we all doomed?

No. We’re like the patient that goes to the doctor and learns he’s overweight, or his cholesterol is too high. He doesn’t die immediately—but until he changes his lifestyle and gets back down to the safe zone, he’s at more risk for heart attack or stroke. The planet is in its danger zone because we’ve poured too much carbon into the atmosphere, and we’re starting to see signs of real trouble: melting ice caps, rapidly spreading drought, and more. We need to scramble back as quickly as we can to safety.

The 350 campaign is focused on making the connections between our actions and climate change easier to understand so we can turn this around.