From: Robert J. Bradbury (bradbury@aeiveos.com)
Date: Sun Mar 24 2002 - 20:25:14 MST
On Sun, 24 Mar 2002, spike66new wrote:
> >>The greens will not rest comfortably until humans are all dead.
Not when they realize the transhumans view the Earth as horribly
underutilized resources for computronium.
> Natural processes cannot fully return all life's elements to the
> life cycle.
Perhaps not, but it can become much more efficient (ADP/ATP turnover
in cells is *very* rapid), or it can make substitutions (its really
rather a crime that ATP is the standard unit of currency for all
reactions requiring energy. That leads to a lot of wasted energy
because the enzymes can't make change except in the form of heat.
> Had not humanity come along, all Gaia's lifeforms would eventually perish
> for want of calcium and phosphorus, long ere lack of carbon would
> become a serious issue,
If the volcanos are spitting up CO2 from subduction zones, then
the are certainly releasing some of the Ca/P as well. I think
a complex discussion with some geologists would be required
to determine the rate at which we might be losing Ca/P.
> long ere fatal global cooling as a result of atmospheric shortage
> of greenhouse gases such as carbon dioxide and methane.
My bets are on the oceans evaporating (should nothing else
intervene). At that point I think plate tectonics gets a lot
slower.
Robert
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