Since 1997 to now in 2010, evidence and data continues to be collected by the grass roots movements to show related health and environmental effects from recorded Aerosol chemical spraying (AKA Chemtrails).
Proven facts show the difference between condensation or "contrails" vs chemtrails being observed plus the motivation for the aerosol spraying from many patents. Contaminated rain water and other samples have been identified with the elements mentioned in these patents (Barium, aluminum and many others) and are linked to the growing worldwide reported health effects. A new disease has also been identified with related data collected from Chemtrails (Morgellons disease). http://www.carnicom.com/morgobs1.htm