Biochar [1] is a potential approach to long term carbon sequestration using waste biomass that has the positive side effect of enriching agriculture soils and p

Biochar [1] is a potential approach to long term carbon sequestration using waste biomass that has the positive side effect of enriching agriculture soils and producing biofuels, and it does not require special caverns like CCS. There are potential unknown negative side effects of reducing environmental plant residues from current levels, however, so the choice of feedstock biomass shouldn't be taken lightly. Perhaps it should be made from human waste streams or fast growing grasses from areas that have high regeneration potential. Then again, agriculture itself has fundamentally modified ecosystems for centuries, so there's not much that is timeless or sacred about the current state of industrial agricultural land. If it's a question of whether the leftover crop matter rots and CO2 is released, or is captured long term in biochar, then its compelling to consider it. https://www.patch.io/blog/biochar https://www.patch.io/blog/biochar