Chemtrails

Chemtrails are a popular term for the visible streaks left behind aircraft in the sky, which some believe are chemical or biological agents deliberately released for various purposes. However, most scientists and authorities clarify that these trails are simply contrails—condensation trails formed when hot, moist aircraft engine exhaust mixes with the cold air at high altitudes, creating ice crystals. These contrails can linger and spread out, forming cloud-like patterns. There is no credible scientific evidence supporting the existence of intentional chemical spraying, and current understanding attributes contrail formation to normal atmospheric and aircraft conditions.