How much water is extracted from air by PV panels that output H2O, and what are the impacts?
Do drilling and fracking consume lots of water and create holes through aquifers? Do holes in aquifers cause aquifers to drain out to lower chambers of the earth?
Historically, people have moved to where the water is.
Is there a subsurface ocean on Earth or Mars?
Is there enough of a thermal gradient between very deep wells and surface water to generate energy?
How many humans operating humanoid robots operating construction equipment does to take to build irrigation canals?
Perhaps helpful new solar distillation tech for #Goal6 #CleanWater:
- "Desalination system could produce freshwater that is cheaper than tap water" (2023) : "Extreme salt-resisting multistage solar distilation with thermohaline convection" (2023) https://news.ycombinator.com/item?id=39507692
Perhaps there are already sustainable salt-tolerant plants without GM; algae, kelp, sargassum
There is plenty of salt water on Earth. Does life on earth depend upon and/or derive from ocean thermohaline cycles?