Video via inFact – YouTube:
Transcript via inFact:
Some people believe that airplane contrails are really the government spraying us with poison. Could this be true?
There are at least three possibilities: contrails are the normal and expected result of fuel-burning planes flying at high altitude; all trails left in the sky by planes must be the result of the covert spraying of chemicals; or some contrails are natural, and some are chemtrails.
The first one we know for sure. When a hydrocarbon fuel burns in air, water is the largest byproduct by mass. At low pressures at altitudes higher than 25,000 feet and temperatures less than -40 degrees, water vapor always condenses into cloud; or anytime the addition of this small amount pushes the humidity past the saturation point. So in any given set of atmospheric conditions, all planes will either produce a condensation trail or not.
But what if the government wants to spray chemicals into the atmosphere, according to the popular urban legend? Is spraying from airliner altitude an effective way to do it? There are good science-based reasons why this wouldn’t work.