When you see a jet flying across the sky and it's contrail does not dissipate and go away, but grow and spreads out into a long cloud, that is what' people are calling a 'chemtrail.' I am an aviation professional and I know that when I see these almost every day occurrences, that they are spraying high up in the atmosphere. There are several theories about them, but one thing for sure is that is our government and our press are keeping a lid on any explanation. There is a lot of dis-information on the web but there also is information from who I think are credible sources. On You Tube search on 'Global Dimming' and 'What in the World are They Spraying' and you will get some very well done videos on this." http://www.csindy.com/coloradosprings/Profile?oid=2774911
