Re: HOW FORD PLANS TO CUT AUTO EMISSIONS

From: Dirk Bruere at Neopax (dirk_at_neopax.com)
Date: 10/11/04 

Date: Mon, 11 Oct 2004 18:56:27 +0100

G. R. L. Cowan wrote:

  hanson included:
>
>>Don't hope for fossil oil to get scarce or to run out! Not a chance.
>>Ain't gonna happen. Listen. Initially, "they" say the earth had an
>>anaerobic envelope:~0 % O2. Present was only (relevant) CO2 and
>>Carbonates. Photosynth. etc. has liberated by now ~21% free O2 into
>>the air: That translates into ~1E+21 gr or ~1E+15 tons of available O2.
>>So, each 32 gr O2 buried somewhere 12-14 gr = 1 C (max CH4). Hence,
>>there is 1E+21 * 12/32 = 5E+20 gr or ~ 5.E+14 tons of fossil C in store,
>>buried somewhere. So, at a current use of 3E+15 gr/yr of oil, the fossil
>>stuff will be reoxydised in 5E+20 gr/3E+15 gr/yr =~ 1.5E+05 years!.
>>
>>Alas, no EARLIER than in 150'000 years from now will all the fossil carbon
>>be burned.
>
>
> But perhaps quite a bit earlier, if 3e15 g/y burn rate,
> supposing that's right, were slavishly continued,
> all the fossil carbon whose combustion would yield more energy
> than would be taken in setting up said combustion, would be gone.
>
> Minor detail.

Earth - a hitech wouldbe star faring civilisation powered by digging up stuff
and setting it on fire. 

-- 
Dirk
The Consensus:-
The political party for the new millenium
http://www.theconsensus.org

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