Everyone has looked up at the clouds and seen faces, animals, objects. Human brains are hardwired for this kind of whimsy. But some people—perhaps a surprising number—look to the sky and see government plots and wicked deeds written there. Conspiracy theorists say that contrails—long streaks of condensation left by aircraft—are actually chemtrails, clouds of chemical or biological agents dumped on the unsuspecting public for nefarious purposes. Different motives are ascribed, from weather control to mass poisoning.
Why the chemtrail conspiracy theory lingers and grows—and why Tucker Carlson is talking about it
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