Deary me, an just a lil more easy-peasy evidence on the chemtrails; http://www.watchthesky.org/chems/chemdata.
A level headed interview about em http://oneheartbooks.com/resources/videos/chemtrails_freeman_peterson.htm
A german expose, cuz they got a lil more freedom of info than us ( in some cases) post WW2
http://uk.youtube.com/watch?v=IaPqCMIuEk4&feature=related

An a petition for those so inclined;
http://www.petitiononline.com/t401/