Has this been debunked? It looks to me like chemtrail believers are taking Dr. Kirby's comments out of context and using what he said to "prove" their beliefs. http://www.veteranstoday.com/2014/12/27/climate-scientist-blows-whistle-on-aerosol-dumps-chemtrails/ "these are clouds seeded by jets dumping aerosols into the upper atmosphere". Its from Dr. Kirkby’s 2009 CERN presentation about climate change and in this presentation he talks about contrails effecting climate by creating thin cloud covering. I've only heard excerpts of this presentation. So I'm not exactly sure how it was taken out of context to be honest. When I have a chance I'll listen to the whole presentation. I just thought that maybe this had been debunked already because its from 2009.