DO JET CONTRAILS ADD TO GLOBAL WARMING? Zero Geoengineering Posted on September 25, 2017 by Jolie DianeNovember 25, 2017 The Greenfield Recorder Newspaper 2006 Weather Modification History www.weathermodificationhistory.com Weather Modification History “Jet exhaust however, injected at high altitude can have two to three times the warming effect of carbon dioxide alone…” LINK Share this:FacebookTwitterTumblrRedditEmail Related