“350 is the red line for human beings, the most important number on the planet. The most recent science tells us that unless we can reduce the amount of carbon dioxide in the atmosphere to 350 parts per million, we will cause huge and irreversible damage to the earth.
We’re planning an international campaign to unite the world around the number 350, and we need your help. We need to make sure that the solutions the world proposes to climate change are to scale with the level of crisis that this number represents. Everyone on earth, from the smallest village to the cushiest corner office, needs to know what 350 means. The movement to spread that number needs to be beautiful, creative, and unstoppable.”
— Bill McKibben introducing Project 350: www.350.org