"(Biochar) processing facilities could be built right next to forests
grown specifically to soak up CO2. "You can cut trees down, carbonise
them, then plant more trees. The forest could act on an industrial scale
to suck carbon out of the atmosphere."
Johannes Lehmann of Cornell university has calculated that it is
realistically possible to fix 9.5bn tonnes of carbon per year using
biochar. The global production of carbon from fossil fuels stands at