[semi-extrinsic]

I believe the graphite nut proposal is too inefficient to work. A single large tree absorbs around 30 kg of CO2 per year. If it was able to put 10% of that into graphite nuts (which would be a very good efficiency), you end up with 0.8 kg of graphite nuts per tree per year.

To match the IEAs projections for carbon capture (7.5 gigatonnes CO2 captured per year in 2050) you would need around 3*10^12 trees. That's about the same as the total number of trees in the world. So you need to replace all of the worlds trees, with the corresponding destruction of many of the biggest ecosystems on earth.

[pkdpic_y9k]

Thats a pretty solid breakdown, but that 3x10^12 was a little more hope-inspiring than I was expecting. Seems like a workable part of a larger multi-pronged solution if you streamlined the plants metabolism (?). Then again I dont know what in the h*ll Im talking about so theres that...