On Tue, 30 Apr 2013 18:13:24 -0400, BAR wrote:
In article ,
says...
On Tue, 30 Apr 2013 09:08:00 -0400, John H
wrote:
On the other hand, if global population growth is not reigned in, no
amount of water or energy will be enough.
Let's see, one of my first papers in college was about population growth, with the Club of Rome
being a source of information. This was in the early 70's. That would be about 40 years ago, and I
don't see the population growth dwindling by much.
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It was true then and it's even more true now. It has actually gotten
much worse in fact since India and China have become industrialized
since they are now consuming and polluting much more per capita than
previously.
The catholic church's position on birth control is only part of the
problem - more of an issue in the western hemisphere. Even here
however the cultural issues outweigh the religious ones.
Therein lies the problem with potable water.
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Interestingly enough, if you can solve the problem of creating cheap
and abundant energy (and I believe we will eventually), then creating
potable water out of sea water becomes relatively easy. It's already
being done in the Bahamas, Caribbean and elsewhere but unfortunately
the energy is not yet cheap. Desalinating seawater with diesel
generators costs over 10 cents per gallon of water. Doing it small
scale on your own boat costs close to 50 cents a gallon.