A conspiracy theory about cloud formations in the sky does not seem like it’s fading into the night sky any time soon, even after two decades.
An April 21 Facebook reel showing intersecting line-shaped clouds in the sky says these normal emissions are dangerous.
"This is not contrails that are coming off of the back of an engine or back of the plane," says the video’s narrator. "These are chemtrails — barium, strontium, aluminum, all kinds of pollutants that they're putting into our atmosphere which comes down, trickles down, gets into our soil, gets into our water."
The narrator said this is "poisoning" and "the real cause of disease," but did not specify the kind of disease.
The post was flagged as part of Facebook’s efforts to combat false news and misinformation on its News Feed. (Read more about our partnership with Facebook.)
PolitiFact has debunked other claims involving "chemtrails." The evidence remains: chemtrails aren’t real.