Wired News and Science News reported this week, that meteorological researchers have discovered commercial jet contrails produce a measurable change in the weather. By comparing temperatures during the three days commercial traffic was grounded in September to the temperatures when flights resumed. It, "...emerged that the American climate was indeed noticeably different during those three days without air travel."
Some people have been saying for a few years they already knew contrails affected the weather, and a lot more. But not in the same way the atmospheric scientists claim they do...
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