Contrails or vapour trails are condensation trails and artificial cirrus clouds made by the exhaust of aircraft engines or wingtip vortices which precipitate a stream of tiny ice crystals in moist, frigid upper air. Being composed of water, the visible white streams are not, in and of themselves, air pollution. However, contrails generated by engine exhaust are inevitably linked with typical fuel combustion pollutants. Contrails might also be considered visual pollution.
Chemtrail Conspiracy Theory claims that some trails left behind jet aircraft are different in appearance and quality from those of normal contrails, may be composed of harmful chemicals, and that these different contrails are being deliberately produced, and covered up by the government. These unusual trails are referred to as "chemtrails" (a portmanteau of "chemical trails"). The belief is that a chemical and/or biological agent of some sort is being released. The term "chemtrail" does not refer to common forms of aerial dumping (e.g. crop dusting, cloud seeding or aerial firefighting). It specifically refers to systematic, high-altitude dumping of unknown substances for undisclosed purposes, resulting in the appearance of these unusual contrails.
The chemtrail theory apparently first achieved prominence in mid-to-late 1990s. Chemtrails have been discussed on radio programs hosted by Art Bell and Jeff Rense with investigative journalist William Thomas who first reported on Chemtrails. According to a FAQ posted at Jeff Rense's website, "chemtrails (CTs) look like contrails initially, but are much thicker, extend across the sky and are often laid down in varying patterns of X's, tic-tac-toe grids, cross-hatched and parallel lines. Instead of quickly dissipating, chemtrails expand and drip feathers and mares' 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."
ALPHABETICAL INDEX OF ALL FILES
