On Tue, 03 Jan 2006 23:16:49 -0600, dazed and confuzzed
wrote:

That's an interesting question. Alternative-fuel promoters often talk about
the advantage of these biological sources in terms of CO2 production,
because they supposedly sequester as much CO2 in growing as they release in
burning.

Only the burning of the ethanol. In fact, the CO2 from the fermentation
is collected and sold as a part of the production of the ethanol plant.

It still gets released in the end, just as will the Carbon
sequestered in your building materials when they burn or rot.

BTW, IIRC Cement production releases a huge amount of CO2
as well.
--
Cliff