GreenForges digs deep to farm underground

https://techcrunch.com/2021/10/12/greenforges-digs-deep-to-farm-underground

"anywhere in the world, no matter the time of year or environment, temperatures stabilize underground... underground system will increase energy efficiency by 30-40% compared to traditional vertical farms... startup GreenForges... will drill 40-inch-diameter holes into the ground underneath new buildings and lower the equipment into the hole... up to 30 meters deep... Maintenance and harvesting will be done by mechanically pulling the crops up to the surface where a human can fix or pick"

Related:

A Dutch vertical farming company has just been valued at over $1 billion
https://www.cnbc.com/2021/12/16/infarm-vertical-farming-firm-valued-at-over-1-billion-by-investors.html

Spray-on polymer could cut food waste and increase incomes for Kenyan smallholders

https://phys.org/news/2023-03-spray-on-polymer-food-incomes-kenyan.html

Floating sea farms: a solution to feed the world and ensure freshwater by 2050

https://www.unisa.edu.au/media-centre/Releases/2023/floating-sea-farms-a--solution-to-feed-the-world-and-ensure-freshwater-by-2050/