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Oh, and as for the contrails page...haha...that is a good one...
Contrails are formed by an aeroplane disturbing the equilibrium of the water vapour in the atmosphere...this causes nucleation, which, in turn causes "clouds" or contrails to form...it is merely precipitation in the atmosphere caused by the disturbance the plane has caused.
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"Beware of the man who works hard to learn something, learns it, and finds himself no wiser than before.
He is full of murderous resentment of people who are ignorant without having come by their ignorance the hard way."
-Kurt Vonnegut
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