You are hereWhy 350? 90 Seconds, 0 Words (Video)

Why 350? 90 Seconds, 0 Words (Video)

By bravenewbus - Posted on 30 January 2009

1 is building a campaign around the "most important number", 350. 350 is what James Hansen, a leading researcher on global warming, urges us to strive towards. 350 ppm (parts per million, a ratio of one substance to another, in this case C02 to air) is the acceptable amount of CO2 that we should be aiming for and would require drastic changes to our transportation and energy production industries to abate the rise in CO2. Visit for how you can do your part to reduce the CO2 in our atmosphere.

Donation Tracker

Join Mailing-List!

Check out the Gallery!

Where's the Bus?

View Where's the Bus? in a larger map