Today the Oil Drum linked to a James Hansen released paper analyzing the impact of peak oil, peak gas, and peak coal on the likely emissions of carbon. Hansen notes that most of our emissions scenarios have thus far failed to account for whether the carbon will even be there to burn.

Plenty of graphy goodness, but what I took away was this: There’s just enough oil and gas left in the ground to take us up to, or maybe a bit over, the 450 parts per million of CO2 that climatologists worry about so much. This makes it imperative that we in the developed countries immediately phase out coal, the one supply of fossil carbon that can take us right over the cliff.