> They could pump seawater to several valleys below sealevel, and naturally desalinate
Could you explain how this works? Why does the valley need to be below sea level?
Could you explain how this works? Why does the valley need to be below sea level?
They don't have to be, but piping seawater there would save cost as the water level tries to reach equilibrium.
Then they just need to let the hot sun do its' work, and occasionally open the valve.
The Salton Sea, CA, e.g. is 38m below sealevel.
Another reason to use below sealevel may be safety: Not all cracks and ground fissures are known, and pumping in large quantitues of saltwater may have an undesired effect on groundwater.
https://en.m.wikipedia.org/wiki/List_of_places_on_land_with_...