At 06:00 PM 3/1/98 EST, you wrote:
>None!
>Space shuttle exhaust is simply water vapor.  They are combining
>hydrogen with oxygen to get water.
>
>I think this is correct, someone correct me if I'm wrong.  I was also
>amazed to find that it's not pollution, it's water :-)

You are right for liquid fueled rocket engines -- hydrogen and oxygen make
water.  It's not the same for the solid fueled rockets, and I don't know
what kind of pollution they produce.  I will find out and post it here, if
anybody is interested.  The shuttle uses solid rocket boosters.

I was a bit amused by the argument that it's OK for me to pollute because
some people do it more than I do.  Let's see, a bunch of mass murderers
have killed a lot of people, so if I only kill one or two...

Bill (SE Arizona) (Bill@freeholder.com) HTTP://www.freeholder.com
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You can't do everything, but you can do something.
You can't help everyone, but you can help someone.
Even one candle helps to push back the darkness.