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I'll tell you why i laughed...how can anyone be so sure that anything is "solid knowledge" from that site or any, really, for that matter (haha)...Who knows, tomorrow, the so-called "scientists" may somehow discover they were wrong..then what??
Contrails also caused occasional visibility problems within large aircraft formations. Thick, persistent contrails made it more difficult to stay in formation, and could even lead to aircraft collisions. As a result of these problems, much research on contrails was conducted by Germany, Britain, and the United States during the war.
reply to post by waynos
when someone makes a statement against the "science" (for lack of better term) behind what you may or may not believe...don't make/take it so personal. If you really want to find out which side is really telling the truth..don't let your emotions jack up the truth for you by believing the hype...just food for thought