https://animal.law.harvard.edu/wp-content/uploads/Eating-Away-at-Climate-Change-with-Negative-Emissions%E2%80%93%E2%80%93Harwatt-Hayek.pdf https://animal.law.ha

https://animal.law.harvard.edu/wp-content/uploads/Eating-Away-at-Climate-Change-with-Negative-Emissions%E2%80%93%E2%80%93Harwatt-Hayek.pdf https://animal.law.harvard.edu/wp-content/uploads/Eating-Awa... This covers moving the UK to self-sustain by reducing animal products and repurposing animal feed cropland to direct consumption cropland; it also covers reforestation. So while it isn't possible today, its possible to become possible without relying on any technological advancements.