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Computare
Focus on tuning land portion of carbon cycle
•Carbon sink in soil larger than atmosphere (1500 vs. 750 billion tonnes)
•Annual exchange by plants is huge. (About 120 billion tonnes/year)
•Humans control on order of 24 billion tonnes /year
•Fossil fuel emissions about 8 billion tonnes annually
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From: NASA
I came home enthused by the excitement to make more people aware of the possibilities.

This land portion of the carbon cycle indicates plants cycle some 120 billion tonnes of carbon through the atmosphere annually.

Growing plants absorb carbon dioxide  from the atmosphere via photosynthesis into carbon bearing materials. Most is returned to the atmosphere as carbon dioxide through consumption by plants themselves and various animals from microbes to elephants - and  burning of plant materials.

Humans control about 24 billion tonnes of this cycle by my estimate. Emissions from fossil fuel are about 8 billion tonnes. This simple analysis suggests the potential is there to counter fossil fuel emissions through conversion of plant material to charcoal.

Could we modify agricultural techniques to ensure a much larger portion of carbon is retained in the soil?

More specifically,  could we convert a portion of the plant growth we manage to charcoal and place it in the soil to serve as a carbon sink and a soil enhancer?