Jim Hansen: As CO2 climbs, what are the long-term warming effects of CURRENT CO2 levels?

Jim Hansen: As CO2 climbs, what are the long-term warming effects of CURRENT CO2 levels?http://mises.org/Community/blogs/tokyotom/archive/2008/04/08/does-new-paleodata-show-that-current-co2-levels-are-already-too-high.aspxWhat do climate scientists say that recently obtained data about our past climate tells us about the consequences of long-term increases in atmospheric CO2 (and other GHGs)? They tell us that we are already at levels that, if sustained (and at currentenCommunityServer 2008.5 SP2 (Build: 40407.4157)