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.
I'm going to include 350 postcards in the program for my show "The Boycott." Everywhere the show tours this fall, audience members will get 350 postcards which they can send to their elected official
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 »
Climate Movement Success Stories
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.