what if the usa gets in a civil war. i mean states in the west r gonna need water sooner or later and they will come to michigan for the lakes what if michigan says no and they get guns out and fight for it??
Ya, it's rather hard to do anything large scale to purify salt water, every method we have now needs to be made more efficient before it would be practical to use. Here's hoping we figure out nuclear fusion so that those impracticalities of today become the yay we did it's of tomorrow.