As I’ve warned before, aquifers are being massively depleted, and it’s happening in places that grow food. California, which is in drought, is now draining its aquifers especially fast. Note also that fracking uses immense amounts of water.
This is also a problem in other nations, most notably India, where some farmers are already losing their farms due to aquifer depletion.
Expect to move to massive desalination, and attempts are on to find cheaper ways to desalinate water. Combined with cheap solar, this may be feasible for some areas. Interior continental areas, however, may not find it so useful. Still, we can expect project to build desalination plants and massive canals driving the water into the interior.
The question with this, assuming it is done, will be who does it: public or private, and how regulated they are. Even if water is theoretically available, it may be much more expensive than it is now, and we can expect that to make food even more expensive.
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