QUOTE(hazzard @ Aug 25 2005, 11:23 AM)
The Chemtrails believers think that there's some sort of chemical being released by some/all planes in their contrails.
Depending on how gaga they are, the cause is to either increase the planet's albedo and so "do things" to the weather, or that the chemicals are to poison us/contain mind control agents/do multifarious other "bad things".
It's all completely rubbish conspiracy theory nonsense, obviously, but you can't dissuade them because the conspiracy requires everyone who is in a position to notice the lack of big tanks of mind-control chemicals on planes is obviously part of the conspiracy and not to be trusted.
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What's the difference between a jet contrail and a chemtrail? According to the U.S. Air Force, jet contrails form above 33,000 feet when hot engine exhaust momentarily condenses ice crystals into pencil-thin vapor trails that quickly vanish like the wake behind a boat.
Chemtrails (CTs) look like contrails initially, but are much thicker, extend across the sky and are often laid down in varying patterns of Xs, tick-tack-toe grids, cross-hatched and parallel lines. Instead of quickly dissipating, chemtrails expand and drip feathers and mare s tails. In 30 minutes or less, they open into wispy formations which join together, forming a thin white veil or a "fake cirrus-type cloud" that persists for hours.