This Saturday, October 24, more than 4,000 events in 170 countries will take place as part of 350's International Day of Climate Action -- all calling upon world leaders to reduce carbon levels in the atmosphere to a safe level of 350 parts per million.
It's the largest collective display of action to fight climate change the world has ever seen.
President Obama and the U.S. Senate must support strong climate action here at home -- and you can help us send that message loud and clear by attending the October 24 event in New York City.
You can find out where your local action is by clicking here.
For my part, I will be at the event in New York City's Times Square. Activists, scientists, political leaders and 350.org co-founder Bill McKibben will take to New York City's Times Square and showcase events happening all over the world up on the big screens.
At exactly 3:50 pm, supporters will count down from 387 (the current level of CO2 in the atmosphere) to 350.
If you want to join us, please be at the corner of 33rd Street and Broadway by no later than 3:30.
Or joing one of the 4,000 other events around the world by clicking here.