@Olivier5,
Quote: Carbon that had been trapped SINCE THE MESOZOIC in fossil fuels. You bet we warming the planet.
Availability of carbon per "geologic age" has absolutely nothing to do with formation and trapping of foassil fuels, its all due to the perturbations of continental shelves an shallows where organisms could deposit their little bodies over time . The tectonics of Rhodinia, the existence and joining of Laurasia and Gondwana into the super Pangean Continent controlled what got deposited and where.
IF we were to consider when the largest deposits or coal, oil, limestone and Siderite occured, it was the Paleozoic. After all they didnt call the last third of the Paleozoic , the "CARBONIFEROUS" for nothing .
ANYWAY, if we are convinced that we must do something NOW, I am confused why all the Anthropo-GW folks are against gas drilling? That makes no scientific sense. Heres a new industry that can be regulated an made to tow environmental regs in order to develop their fields, yet the masses of Anthropo-GW folks are equally busy at drilling for gas .
The US has, in the last 3 years, due to the changing over of our power plants from Coal to natural gas, REDUCED the CO2 emissions by HALF. and we can even do better by engineering design of combined cycle plants with nifty scrubbers or deep injection of scrubbed exhausts.
We have several 1000 MEGAWATT plants using gas in the Pa Hills and these plants are maybe 1/10th the size of an equivalent coal plant (they dont need these huge acid dump ponds and coal piles and railroads.
My faith in human beings "getting it" is slipping away.
Whether Im right or youre right- most of the world isnt doing **** to a phenom that may or may not be under our control. We can do some relatively minor adjustments that have shown to yield big results.
NOW, having said that, we will be, in another 10 million years or less, be in a CO2 deficit. SO much so that we may lose C3 plants and rely on only C4 plants to be all of our food stuffs.
Eg , Rice and all triticallies are C3 I believe. (But, what the hell, we can teach em to eat pollenta-corn is a C4)
The reason Im not quickly calling for the canning of CO2 exhausts is that we may need some sinks to "Store" this gas (corals, marls, organic muds, duff etc) or we may be in a true 6th extinction of animals and plants whose entire beings encircle one type of plant material .