350. What some scientists believe is an acceptable amount of atmospheric CO2 in parts per million. This photo show where we are and where we need to be.

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<a href="http://twitpic.com/mlpg1" title="350. What some scientists believe is an acceptable amount of ... on Twitpic"><img src="http://twitpic.com/show/thumb/mlpg1.png" width="150" height="150" alt="350. What some scientists believe is an acceptable amount of ... on Twitpic"></a>

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+co2  +global warming  +carbon  +350  +350org