[aerohead]

1) Every tree on Earth constitutes one (1) world forest equivalent ( wfe).
2) Global annual Fossil-fuel combustion-related carbon emissions equal 15- wfe.
3) A forest fire, large enough to generate an equivalent amount of carbon would be larger than the entire surface area of Earth, including all the oceans.
4) In order to just balance the annual carbon load going into the atmosphere from fossil-fuels would require planting enough trees to cover more surface area than Earth's, every year. ( 1.6-Earth surface areas ).
5) A rather asinine proposition, although the mathematic requirement.
6) Power requirements for #4 would be provided photosynthetically, at no cost. Although there'd be no provision for any other life on the planet.
7) So have fun with your carbon sequestration and tree-planting. It makes perfect sense in a Chicago School of Economics Universe.
8)'Waiter, I'll have that HUMMER now.'