On Tue, 11 Oct 2011 02:00:25 -0700 (PDT)
Neil Williams wrote:
On Oct 11, 9:53=A0am, wrote:

You have to wonder just how many more flights will satisfy the aircraft
lobby. The sky is already a contrail polluted mess on most days

You do know what contrails are, right? They aren't pollution. Though
the aircraft will emit that as well.

Yes thanks, I'm fully well aware of what they're composed off. But do you
think all the CO2 and nitrous oxides run away and hide? They follow the
exact same path as the ice crystals and in fact the ice itself will be
slightly acidic due to dissolved N02. Besides which contrails on their own
affect climate as was demonstrated after 9/11 when all flights in the US
were grounded and the average temperature went up a degree or so.

B2003