https://www.chemtrailprotection.org/about/chemtrails-vs-contrails Contrails are the result of condensation. Jet engines spew out hot, humid air into an atmosphere that is cold and has low vapor pressure, the result is condensation. The water vapor coming out of the engine quickly condenses into water droplets and then crystallizes into ice. The ice crystals are the clouds that form behind the engine. This is why the streaks are called contrails, short for "condensation trails." Chemtrails are contrails which are deliberately filled with toxic metals, chemicals and biological warfare products to poison the general public without their knowledge. The US Department of Defense (DOD) and military have been systematically blanketing all our skies with what are known as Chemtrails aka as Stratospheric Aerosol Geoengineering. These Chemtrails differ vastly from the usual plane contrails that evaporate rather quickly in the sky. Chemtrails do not dissipate. Rather, planes, fitted with special nozzles, release aerosol “lines” in the sky that do not evaporate. Multiple planes are deployed, flying parallel. Soon the sky is blanketed with many grayish-white lines, often creating “checkerboard” patterns overhead. At first, these lines are thin but soon they expand and, in a short time, merge together. Our once blue sky has vanished and has been replaced by a grayish- white toxic haze that blots out and greatly diminishes our usual sunshine.