Declassified CIA Files Reveal Cold War Weather Modification Programs

However, mainstream scientific consensus does not support chemtrail claims.

Scientists overwhelmingly say the white streaks commonly seen behind aircraft are condensation trails, or contrails, created when water vapor from jet exhaust freezes into ice crystals at high altitudes.

That phenomenon has been well understood for decades.

There is also a major distinction between historical, documented weather modification experiments and claims of ongoing mass atmospheric poisoning.