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.

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 …

350.org is building a global grassroots movement to solve the climate crisis. Our online campaigns, grassroots organizing, and mass public actions are led from the bottom up by …

Climate change affects us all but makes inequalities even deeper. 350.org is fighting for climate solutions rooted in justice, putting people and communities first.

Today, 350.org works in almost every country in the world on campaigns like fighting coal power plants in India, stopping the Keystone XL pipeline in the U.S, and divesting public institutions …

Nov 17, 2025 · In just nine days, support for a fossil fuel phase-out road map has grown from 1 to 62 countries, from both developed and developing countries, analysis by 350.org shows.

Feb 7, 2025 · At COP29 in Azerbaijan, 350.org and partner organizations hosted an action demanding more ambition on countries’ climate plans. Photo credit: Jason del Rosario

350.org leads the People's Climate March, the largest climate march in history, with 400,000 people flooding the streets in New York, joined by 2,000 actions in 162 countries.

He is a founder of 350.org, the first planet-wide, grassroots climate change movement, which has organized twenty thousand rallies around the world in every country save North Korea, …

Uruguay is proof in point that the renewable energy transition isn’t just possible — it’s powerful. In less than a decade, the country shifted from fossil fuel dependence to sourcing over 98% of its …