350.org is turning the page on the fossil fuel industry and building a clean, just future by connecting powerful grassroots climate movements around the world.

350.org is an international environmental organization addressing the climate crisis. Its stated goal is to end the use of fossil fuels and transition to renewable energy by building a global, …

The 350 Network Council is a coalition of the 16 largest independent 350 affiliates in the US. We are united by our commitment to climate justice, grassroots organizing, and shared values.

What's in a name? Ours, 350, is a number. And a very important one. It is a reference to 350 parts per million (ppm) – the concentration of carbon dioxide (CO2) in the atmosphere …

Help 350.org build a powerful climate movement. We believe in a safe climate and a better future — a just, prosperous, and equitable world built with the power of ordinary people.

Ahead of the UN COP15 Summit in Copenhagen and 350.org’s first Global Day of Action, people in 181 countries mobilize to demand a binding climate treaty to stay below 350 parts per …

Many climate scientists consider 350 ppm the safe upper limit for atmospheric CO2 to maintain a stable climate. And we’ve already exceeded the threshold for climate safety by a significant …