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Boulder Contrails: Jet’s Jetsom, Vanishing Vapors

We see contrails every day in the Boulder skies. Colored like clouds, they are the straight lines in the sky that trail jet planes. And what are they? Why do they appear at all? Some of the Most Interesting Contrails I’ve Seen       pic Lensworth Contrails, short for “condensation trails,” are cloud-like trails left behind by […]

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