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.
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 »
Featured Updates
Not Done Yet.
You've always counted on us to tell the truth, and it would be useless to pretend we're happy with the outcome of the Copenhagen climate talks.... Read Post »
To submit your photos and action reports to 350.org, please click here.
Understanding 350
- So, what is global warming and what's the problem anyway?
- And what does this 350 number even mean?
- If we're already past 350, are we all doomed?
- How do we create the political change to steer towards 350?
- How do we get the world on track to get to 350?
- How do we actually reduce carbon emissions to get to 350??
- Will this thing work? Will world leaders listen?
- Where did this 350 number come from?
- Isn't America the biggest source of the problem? What about China and India?
- 350 is just a number. Wouldn't "Climate Emergency" or "Clean Energy Now" be a better call to action?
- And what about all the other targets people are aiming for?
- Why October 24th?
- Why another organization--there are already too many things going on!
- Do you measure 350 in CO2 or CO2e?
More...
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.
350 Store
Help spread the word and look good while doing it--check out the 350 Store for t-shirts, buttons, stickers, and more.
350 Music
Raise the volume, lower your emissions: Launch the 350 music player! »
Problems launching the player? Try here.








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