Climate change may disrupt global food system within a decade, World Bank says

[Erich Bloodaxe BSN]

3. Far less, actually.

And no pesticides, as long as they're careful about controlling entrances and exits.

Since it's an enclosed system, the water they pump in that evaporates off is trapped in the building. Now it's mostly being used so far for short crops, like lettuce, that they can stack 10 or 20 deep on shelving, so I'm not sure how well it could be adapted to things like corn, that grow pretty tall. With the short stuff, they were claiming massive yield increases over a given area, since they can go in 3 dimensions by stacking so many crops in the same space.