> The term "chemtrail" should not be confused with other forms of aerial dumping (e.g. crop dusting, cloud seeding, aerial firefighting, although the principle is much the same. It specifically refers to covert, systematic, high-altitude dumping of unknown substances generally for some illicit purpose, be it that of Governments, terrorists, private corporations, or all of the above.
> Among the theories proposed for the purpose of the alleged "chemtrails": atmospheric and weather modification, biological warfare, mind control, occult purposes, or other functions associated with a New World Order.