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 ("ppm")to below 350 ppm. But 350 is more than a number—it's a symbol of where we need to head as a planet.
At 350.org, we're building a global grassroots movement to solve the climate crisis and push for policies that will put the world on track to get to 350 ppm.
Scientists say that 350 parts per million CO2 in the atmosphere is the safe limit for humanity. Learn more about 350—what it means, where it came from, and how to get there. Read More »
Submit your success story from your work in the climate movement and we'll share the best ones on our blog and social networks! Stories from people like you are crucial tools in growing the climate movement.
Help spread the word and look good while doing it—check out the 350 Store for t-shirts, buttons, stickers, and more.