----- Original Message ----- From: "Steve Desjardins" <[EMAIL PROTECTED]>
> There are many activities (music) that have no real benefit except that > someone exnjoys it. > > I was a bit puzzled by your comment about jumbo jets. They are > actually pretty efficient even though they use a lot of fuel because > they move so much stuff. They are certainly more efficient than trucks. > The problem is they have to land at airports, whereas trucks can go > anywhere. IIRC, the altitude where jumbo jet pollution happens offsets the efficiency. The same amount of exhausts do a lot more damage up there. Jostein
