An our challenge going forward is the long term sequestration of carbon, this will not help, as it will not capture the excess CO₂ released by humanity. If a si

An our challenge going forward is the long term sequestration of carbon, this will not help, as it will not capture the excess CO₂ released by humanity. If a significant part of this greening is farmland, there is of course also the CO₂ released through field work and harvesting to consider.