Chemtrail conspiracy theory
Conspiracy theory about contrails
Why this is trending
Interest in “Chemtrail conspiracy theory” spiked on Wikipedia on 2026-07-20.
Categorised under Technology, this article fits a familiar pattern. wt.cat.technology.2
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Key Takeaways
- The chemtrail conspiracy theory is the erroneous belief that long-lasting condensation trails left in the sky by high-flying aircraft are actually "chemtrails" consisting of chemical or biological agents, sprayed for nefarious purposes undisclosed to the general public.
- Chemtrail conspiracy theories emerged in the late 1990s after publication of a 1996 United States Air Force (USAF) report on weather modification, with the Air Force accused of secretly spraying substances via aircraft.
- Chemtrails have been dismissed by the scientific community.
- Proponents have tried to prove that chemical spraying occurs, but their analyses have been flawed or based on misconceptions.
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Source summary
WikipediaThe chemtrail conspiracy theory is the erroneous belief that long-lasting condensation trails left in the sky by high-flying aircraft are actually "chemtrails" consisting of chemical or biological agents, sprayed for nefarious purposes undisclosed to the general public. Believers in this conspiracy theory say that while normal contrails dissipate relatively quickly, contrails that linger must contain additional substances. Those who subscribe to the theory speculate that the purpose of the chemical release may be solar radiation management, weather modification, psychological manipulation, human population control, biological or chemical warfare, or testing of biological or chemical agents on a population, and that the trails are causing respiratory illnesses and other health problems.
Chemtrail conspiracy theories emerged in the late 1990s after publication of a 1996 United States Air Force (USAF) report on weather modification, with the Air Force accused of secretly spraying substances via aircraft. The theories spread through internet forums and were popularised by radio host Art Bell from 1999.
Chemtrails have been dismissed by the scientific community. There is no evidence that purported chemtrails differ from normal water-based contrails routinely left by high-flying aircraft under certain atmospheric conditions. Proponents have tried to prove that chemical spraying occurs, but their analyses have been flawed or based on misconceptions. Because of the conspiracy theory's persistence and questions about government involvement, scientists and government agencies around the world have repeatedly explained that the supposed chemtrails are in fact normal contrails.
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