As someone who's very, very skeptical of the chemtrail crowd, mostly because the vast majority of 'em can't articulate what they are and what's in them. I'm not sure about their claims. That said, this is interesting... " (5) Under the Weather Modification Reporting Act of 1972 (15 U.S.C. 330 et seq.), NOAA is responsible for oversight of any activities undertaken to modify weather, which includes research or testing activities related to modifying the atmosphere to affect local, regional, or global climate (defined as atmospheric climate intervention under such Act)." The way I read this it means that at least since 1972 the government has been doing something to 'intervene' with the climate. Nothing to worry about there, right? We all know the government has a long and storied history of doing only the best for us citizens, right...?