William Thomas is a Canadian writer who was one of the original promoters of the Chemtrail Theory. His bio can be found here: http://www.consciousnessbeyondchemtrails.com/speakers/william-thomas/ excerpt: I went to the conference and watched his presentation. It mostly consisted of very old information that had been debunked before, and a number of recording of phone conversations that were rather difficult to hear. For some reason the conference organizers did not upload his video, but here's a preview: Afterwards I had a nice chat with Thomas. He was very polite. I pointed out an error in his presentation, where he had said contrails need temperatures of -70F to form, when really they need temperatures of -40F. I went home for lunch and looked up where he had originally made this mistake in his book when converting for Celsius to Fahrenheit, and forgetting to add 32. That afternoon I pointed out that he'd been using the incorrect figure for 12 years. He seemed a little thoughtful about this, even saying something like "If you get that wrong for twelve years, who knows what else might be wrong". He recounted how on the plane to Los Angeles he'd noted the outside temperature was -50F, and had thought that was a temperature at which contrails could not form. We also discussed in some length the "ice budget" argument against contrails, which basically notes that it's impossible for anything other that contrails to create such long visible trails - because the vast majority of the ice in the contrail comes from the atmosphere itself. A "chemtrail" consisting of powder would quickly dissipate. The opposite of what most chemtrail theorist say. He seemed quite interested in it. He asked for my email so he could contact me later. Unfortunately he never did contact me. And his web site continue to promote chemtrails (although it does seem under-maintained) http://www.willthomasonline.net/ In particular he has posted a chemtrails timeline, going up to January 2013: http://www.willthomasonline.net/index_htm_files/CHEMTRAILS TIMELINE TO 2013.pdf The Jan 10 2013 entry reads: Which actually refers to a 2008 test that was debunked two years ago. When I spoke with Mr Thomas, he struck me as very intelligent and reasonable, and it has been with some disappointment that he seems to have not addressed anything we discussed at the conference. As one of the original chemtrail promoters I think he bears particular responsibility for the propagation of the inaccuracies that allow it to continue. So I invite Mr Thomas here to discuss his claims in a polite and science-based environment, here on this forum, in this thread. I don't have any contact information, but will try to contact him via his web-site registration contact. Mr Thomas, what I want to know is if you will correct (or issue corrections for) the provably false statements on your web site, and on the various books and videos you have created or contributed to? Will you come here and allow us to politely point out where we think you are in error, and then engage in a civil discussion to determine the real facts?