A lot of this probably depends on who "we" refers to. I would imagine that many regions are not immune to a mega drought. For the West specifically, wealthier

A lot of this probably depends on who "we" refers to. I would imagine that many regions are not immune to a mega drought. For the West specifically, wealthier nations can kind of just export the shortage by paying more for supplies that would go elsewhere. The West also feeds most of its crops to animals, so that is an area for relatively easy reduction in an emergency. 67% of what is grown in the USA is animal food. But that proportion is dramatically lower in places like India. https://www.vox.com/2014/8/21/6053187/cropland-map-food-fuel-animal-feed https://www.vox.com/2014/8/21/6053187/cropland-map-food-fuel...