CO2 Levels Already 10% Too High – Hansen Team Study
- March 31st, 2008

See the full study, Target Atmospheric CO₂: Where Should Humanity Aim?

http://www.columbia.edu/~jeh1/2008/TargetCO2_20080317.pdf

See the one-page summary of this study:

http://www.ncwarn.org/Programs/NewCoalPlants/TargetAtmosphericCO2Summary.pdf