"Typically contrails can only form at temperatures below negative-76
degrees Fahrenheit and at humidity levels of 70 percent or more at high
altitudes, according to National Oceanic and Atmospheric Administration
meteorologist Thomas Schlattes. Even in most ideal conditions, a jet
contrail lasts no more than 30 minutes."

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"Arab Hijacker" Calls From Flight 93 Were Faked
http://makeashorterlink.com/?H52812BF2



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