Indoor agriculture boosts yields by mixing crops.
Polydome is a revolutionary approach to greenhouse agriculture that offers the possibility of commercial scale, net-zero-impact food production.
The Polydome system strategically interweaves a wide variety of crops and animals, taking advantage of every inch of the greenhouse while eliminating the need for synthetic fertilizers and pesticides.
They claim that rooftop gardens using the Polydome method in New York City could feed that city. I wonder what the cost is, both to build it and for growing the food. Of course, a higher cost to grow could easily be offset by low or no transportation costs.