A Welcome From Bill McKibben
Hello friends--
We've spent a few months building this website, and we hope you like it.
We do--we're enormously grateful to the volunteers who have it running in eight languages already, and to the talented people who made the movies, figured out the graphs and charts, coded all the features.
But it really doesn't mean anything unless you now use it to get involved. It's your tool for influencing the international debate, your link to the globe's leaders. If you figure out an action to take in your community, we will help you get publicity for it in your local media. And then we will send your action out everywhere around the world.
The goal: to build an echo chamber so that the number 350 is heard everywhere, with increasing volume. If we do, then the people who make policy will start to pay attention.
Can it be done? Only if you, and all the people you know, get involved. Please join in.
350 Animation #2!
The Science of 350
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
350 on Twitter!
A Global Day of Climate Action - 24 October

We're planning a global day of action, with events in every corner of the planet--and we need everyone on board
Get started by reading the invitation letter and registering an action in your community.
Want some ideas about the kinds of events you can organize? Just click here.
Current CO2 Levels
350 Messengers
High-profile spokespeople are spreading the 350 message all over the world--click here to see them all. With their help and yours, we'll build this movement.
Friends and Allies

350 isn't one organization, it's a platform--a global network connecting people in every corner of the planet. The 350 network consists of over 200 organizations around the world--click here to check them out. This network gets stronger as it grows--to get your organization involved please e-mail partnerships [at] 350.org
Donate to350
Support an international movement to solve the climate crisis. Whether 3.50, 35.00, or 350.00, euros, dollars, or pesos, your contribution helps us keep going.










Mark Miletich says... on Aug 10,2008
I enjoyed your work, "When Words Fail" and would like to offer a few that I use when I try to explain global warming to my children.
"These ARE the good old days!"
You are welcome to them, if you can use them. The sad fact is that they are the truest words ever written.
Mark Miletich
Concord, CA
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