Re: If humans became extinct tomorrow...
From: Uncle Al (UncleAl0_at_hate.spam.net)
Date: 09/21/04
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Date: Tue, 21 Sep 2004 08:49:01 -0700
Tom wrote:
>
> If humans ceased to exist overnight - how long would it take for there to be
> no trace of human civilisation. ie how long for all the buildings,plastics
> metals,wood to return to the elements?
How long did fossils persist? Coal? Now extrapolate to graveyards,
landfills, foundations, and buried utilities. New York is tunneled 20
stories deep in places. Add naval loses during WWI and II and
container ship spillage durig storms. The north Atlantic, Pacific,
and north Pacific are littered with technology at 2 and 3 miles depth.
-- Uncle Al http://www.mazepath.com/uncleal/ (Toxic URL! Unsafe for children and most mammals) http://www.mazepath.com/uncleal/qz.pdf
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