350 Day of Action

Prolific author and activist Bill McKibben is on a mission to make 350 the most important number in the world. It represents the uppermost safe parts per million limit of carbon dioxide in Earth's atmosphere—a number he hopes will take center stage at the upcoming climate negotiations in Copenhagen.

People from Africa to Washington, D.C to the Maldives are spreading the word on October 24, with demonstrations on lawns, beaches, snowfields, and even underwater.

To view the photo essay, click here.

Find out more about the most important number in the world at 350.org.

Interested? 350: The Most Important Number in the World Citizens build a climate movement around a number.

YES! Magazine encourages you to make free use of this article by taking these easy steps. sgast. (2010, March 04). 350 Day of Action. Retrieved February 03, 2012, from YES! Magazine Web site: http://www.yesmagazine.org/planet/350-day-of-action. This work is licensed under a Creative Commons License