Last year, millions of people from nearly every country on the planet were united by a common purpose: to build a powerful global movement to solve the climate crisis.

The slideshow on the left is just a sampling of the more than 25,000 photos of people uniting in a global call for 350, the safe upper limit of carbon dioxide in the atmosphere.

October 24th, 2009 was called "the most widespread day of political action in the planet's history," with more than 5200 events in 181 countries. We increased pressure throughout the Copenhagen climate talks: we lobbied inside, we protested outside, and we organized thousands of candlelight vigils with partners around the world.