https://arstechnica.com/science/2018/12/urban-farms-could-be-incredibly-efficient-but-arent-yet/
What is your opinion?
Jimbo
"While you may think enlightenment is a long way off or a lofty ideal, it is
actually right now, in this present moment. To think it is anywhere else is
delusion. Tenzin Wangyal Rinpoche