http://www.nmsr.org/chemtrls.htm
http://www.youtube.com/watch?v=uv_545uaOYI
http://www.youtube.com/watch?v=pQz3aZtbF-c
http://contrailscience.com/how-to-debunk-chemtrails/
http://conspiracies.skepticproject.com/articles/chemtrails/
http://www.youtube.com/watch?v=q4kkCijEYpg