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 age
An Airbus A340's engines leaving a water condensation trail (contrail) – miniature clouds formed by the engine exhaust
Multiple concurrent contrails. How long they last depends upon the weather, especially the temperature, humidity, and wind speed.
Airbus A380 water-filled tanks simulate passenger weight for different takeoff and landing displacement weights. Similar photographs are sometimes said to show chemtrail planes in action.
Ballast barrels with water in a prototype Boeing 747 flight-test plane
Robert Francis Kennedy Jr., also known by his initials RFK Jr., is an American politician, environmental lawyer, author, conspiracy theorist, and anti-vaccine activist serving as the 26th United State
Chemtrail conspiracy theory
…or manipulate, the weather will be met with scrutiny and fears of a malign conspirac[y]", and mentioned chemtrail conspiracy theories as an example. Robert F. Kennedy Jr, United States Secretary of Health and Human Services since 2025, started supporting the conspiracy theory in 2024. The conspiracy theory has inspired…
Kennedy with his uncle, President John F. Kennedy, in the Oval Office of the White House in 1961
Kennedy with his daughter, Kick, holding a Harris's hawk in 1989