socialmedian: 350 PPM CO2: Earth's Tipping Point?

User-submitted headlines for this story

Clip

350 PPM CO2: Earth's Tipping Point? - Bill McKibben

Submitted by Milieunet from YouTube

Oct 24, 2009

Summary

Complete video at: http://fora.tv/2009/05/06/Bill_McKibben_350_The_Most_Important_Number_in_the_World

Deep Economy author Bill McKibben, co-founder and director of 350.org, presents the current concentration of carbon in the atmosphere, which has surpassed the redline of 350 ppm identified by scientists as the safe upper limit for C02 in the atmosphere.

-----

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.

In this exclusive lecture for Sydney Ideas leading environmental writer and activist Bill McKibben talks about how climate science and climate politics are quickly evolvingand how we now have a much more specific idea both of the peril we face and the steps (large and difficult) necessary to solve it.

Even two years ago, scientists could offer only vague ideas of how much carbon in the atmosphere was too much. But in the wake of the rapid melt of ...Read the full article