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What is 350?
  • ABOUT
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  • CAMPAIGNS & PROJECTS
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      • Fossil Free: Divest From Fossil Fuels! (USA)
      • Stop the Keystone XL Pipeline
      • Climate Leadership Workshops
      • End Fossil Fuel Subsidies (Global)
      • Connect the Dots: Showing the Human Face of Climate Change
      • Local 350: Activist Groups Around the World
      • 350 EARTH ART
    • Past
      • 2011 Campaign Recap
      • 2010 Campaign Recap
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      • #ClimateForward Rally: Feb. 17 in DC
      • The Do the Math Tour (USA)
      • India Beyond Coal!
      • 2 Questions For Mr. Romney (USA)
      • Stop Heartland's Climate Denial!
      • 5/5/12 - Climate Impacts Day
      • The 99% Spring
      • 24 Hours to Stop Keystone XL!
      • The US Chamber Doesn't Speak For Me
      • No Coal In Kosovo
      • Help President Nasheed
      • Tar Sands Action - Stop the Keystone Pipeline
      • 350 Radio Wave
      • Stop the USA from wrecking the climate talks!
      • Moving Planet Day of Action
      • Don't Frack the Delaware!
      • 10/10/10 - Global Work Party
      • Put Solar On It!
      • The Great Power Race
      • 2009: International Day of Climate Action (24 October)
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350 means safety from the climate crisis.

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.

Join In by Signing Up >>

Read more about the science behind 350.

Youth Partners

A SEED Europe

A SEED Japan

African Youth Initiative on Climate Change

AYLCF Climate Action Network – France

The Australian Youth Climate Coalition

The Canadian Youth Climate Coalition

Caribbean Youth Environmental Network

China Youth Climate Action Network

Climate Youth Network (Europe)

Earth Charter Initiative

E3Alive (Singapore)

Energy Action

ECO-Singapore (Singapore)

Eco-league (Japan)

Federation of Young European Greens

Friends of the Earth Europe

Friends of the Earth Germany

Friends of the Earth Sweden

Ghana National Youth Coalition on Climate Change

Global Climate Campaign

The Global Youth Action Network

Greenpeace Solar Generation

Hong Kong Climate Change Coalition

The Indian Youth Climate Network

International Forestry Students Association

Ithaca College - USA

Japan Youth Ecology League

Nature and Youth Denmark

Nigerian Youth Green Coalition on Climate Change

Nordic Youth Climate Action Movement

Russian Youth Climate Movement

South American Youth Climate Coalition

SustainUS

TakingITGlobal

UN-CSD Youth Caucus

UK Youth Climate Coalition

UNEP Tunza

Young Friends of the Earth Europe

Youth Engagement in Sustainability

Youth and Environment Europe

Youth Environmental Network

Youth for a Sustainable Future Pacifika

Youth for Environmental Sanity

Young Volunteers for the Environment (JVE)

Join Us:

Featured 350 Projects:

Thumbnail Graphic of Obama An Open Letter to President Obama Sign on and help call for bold climate action. Thumbnail graphic of Coal Plant Global Power Shift A global convergence to spark climate action Thumbnail graphic of 350 Workshops logo Fossil Free A campaign to divest our communities and our campuses from fossil fuels. Thumbnail graphic of 350 Workshops logo Climate Leadership Workshops Training the next generation of climate leaders. Thumbnail graphic of 350 Local 350 Local A global network of local climate activist groups. Thumbnail graphic of Climate Dots Logo Connect the Dots (ClimateDots.org) Showing the Human Face of Climate Change Thumbnail graphic of Radio Wave logo eARTh: Climate Art Using art to spark a global climate movement.
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The Science of 350

CO2 Data 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

350 Story Submissions

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.

Photos From the Movement

350 Photo Uploads

Submit your photos and event reports to 350.org.

Check out our ever-expanding pool of photos.

Friends & Allies

AVAAZ, TckTckTck, Oxfam, WWF, Greenpeace Alliance for Climate Education, CYCAN, 1Sky, Energy Action Coalition GetUp!, IndyAct, SustainUS, Movimiento Agua y Juventud Internacionale Caribbean Youth Environment Network, GEO Juvenil Ecuador, Vitae Civilis, Presencia Ciudadana Indian Youth Climate Network, Friends of the Earth, Australian Youth Climate Coalition, UK Youth Climate Coalition

Understanding 350 - Frequently Asked Questions

  • 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 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 another organization--there are already too many things going on!
  • Do you measure 350 in CO2 or CO2e?

More...

350 Messengers

350 Gear

Help spread the word and look good while doing it—check out the 350 Store for t-shirts, buttons, stickers, and more.

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