Investigation
Are chemtrails a secret large-scale spraying program?
Challenges
FAA and EPA documentation explains how ordinary aircraft exhaust can form persistent, spreading ice-crystal contrails in sufficiently cold and humid upper air.
Canonical Source · government document
Contrails
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Evidence context
How this source is used
Evidence roles describe what this source helps establish inside each Investigation. They are local to that use, not permanent labels attached to the publication itself.
Subject families