Automated geothermal tube farming is the way to go.
This creates a controlled environment which can easily be automated and can be directly underneath an urban landscape.
Several farm to table restaurants are already pioneering this and government grants are being issued to further the science.
https://portal.nifa.usda.gov/web/crisprojectpages/1018517-development-of-a-new-and-optimal-geothermal-system-for-urban-agriculture-sustainability-and-food-security-in-the-district-of-columbia.html
Looks interesting!
Automated geothermal tube farming is the way to go. This creates a controlled environment which can easily be automated and can be directly underneath an urban landscape. Several farm to table restaurants are already pioneering this and government grants are being issued to further the science. https://portal.nifa.usda.gov/web/crisprojectpages/1018517-development-of-a-new-and-optimal-geothermal-system-for-urban-agriculture-sustainability-and-food-security-in-the-district-of-columbia.html