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Re: population growth & physics ed



David Dockstader writes:

Some scientists have predictied that the earth was close to its population
limits for decades, maybe centuries? However, somehow we manage to support
larger and larger populations. Where and when will it end? If we're honest
I think we recognize that we have a finite earth and there must be some limit,
but when it comes to what the limiting factors actually will be and when they
will kick in even the most astute among us can do little more than speculate.

Points about fossil fuels are right on target. However, note
increasing deforestation and desertification -- many of the world's
populations are a missed rainfall away from famine. Even in our own
country, topsoil erosion and aquifer depletion are serious problems.
It seems that though we do produce a great deal of food, we do that
by a process that more closely resembles mining than agriculture. The
fact that there is a great deal there to be mined does not mean that
it is sustainable.

Paul J. Camp "The Beauty of the Universe
Assistant Professor of Physics consists not only of unity
Coastal Carolina University in variety but also of
Conway, SC 29526 variety in unity.
pjcamp@csd1.coastal.edu --Umberto Eco
pjcamp@worldnet.att.org The Name of the Rose
(803)349-2227
fax: (803)349-2926