Originally Posted by schild
The Great Lakes contain 90% of the fresh water in the world, someday people will be fighting over that water.
Do you have a source for that statistic? There must be some sort of qualifier on that. So they have 9 times more fresh water than the Mississippi, Amazon, Colorado, Nile, Yellow rivers and all the other rivers and lakes of the would, and all the glaciers, polar ice caps, and the atmosphere combined?
The oceans are filled with fresh water, it just has a few salts and other impurites mixed in, that can be removed.
I found one source that indicates the great Lakes contain 90% of the US' fresh water. Even that is dubious, as a good portion of the Great Lakes belongs to Canada. That same sources indicates they contain 20% of the World's Fersh Water.
Other sources indicate 2/3s of the world's fresh water is ice. Of the liquid Fresh Water, the bulk is underground, not surface water.