I remember reading about aquathermal energy creators that created energy from the differences in the ocean's temperature by depth. The "waste product" was fresh water. http://en.wikipedia.org/wiki/Ocean_thermal_energy_conversion
A nice graphical representation of the amount of freshwater on earth.
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Now THAT's supply vs. demand.
posted by justareviewer on Jul 15, 2008 at 01:04:04 pm #
The graph is from this, which is a pdf viewable from your browser:
http://www.unep.org/geo/geo4/report/04_Water.pdfHere's an interesting wiki article on desalination:
http://en.wikipedia.org/wiki/Desalination
and if they broke down the "freshwater lakes" catagory, what percent of that would the great lakes be?
i'd be interested in knowing the definition of "groundwater" - does that include the shallow wells that we currently use or does that count as surface water? deep wells could be out best hope for wide spread fresh water supply.
on a quick look at the wiki article, i could not find the reference to this graph.
posted by enjoyeverysandwich on Jul 15, 2008 at 11:00:44 am #