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Contrails are composed of more than just water vapor; even the most efficient of jets create chemical pollutions. These artificial cloud formations have an impact on the climate: reducing solar radiation and surface temperatures in that given area. The only thing that is up for debate is whether it is intentional or just another unintended consequence of human technology. So the term contrail or chemtrail are both valid labels since even water vapor is a chemical compound.
reply to post by mrthumpy
No. All that is needed is low temperature and high relative humidity for contrails to form and as it's always cold at those altitudes the only variable really is the humidity.
The H2O is deposited at high speed, so don't be surprised when contrails continue to show some lateral movement after they form. The bigger ice crystals will fall to Earth so the cloud may appear to be precipitating. I won't say it's normal or harmless but it's not a conspiracy by the so-called TPTB.
Stop this chemtrail nonsense. It's destroying lives.