«In 2014, the global consumption of coal, oil and natural gas reached 8.2 billion tons, 33.6 billion barrels and 3.5 trillion
cubic meters respectively, which can sustain [the world] for 110, 53 and 54 years if the current exploration intensity still maintains,» Liu said.
shale) for «inferred total recoverable» oil and gas at 5,100 bbl and 490 trillion
cubic meters,
respectively, I end up with a maximum possible CO2 level (from human fossil fuel combustion) of 980 ppmv.