Comment: only source of info?

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In reply to comment: So the two responses I got (see in situ) only source of info?

I do believe that we see vapor trails because of condensation. But jet fuel residue is not good for living creatures. It is pollution, if nothing else. Unnatural clouds caused by extra water vapor can change our climate, reducing sunshine and the normal cycles of evaporation and cooling.

Vapor trails also alert us to the activity of planes. Many are not passenger planes. It is fair to inquire what those planes are and where they are traveling. They are in our airspace above our properties.

There are open documents recording and suggesting military and scientific uses for deliberate release of various substances in the atmosphere by planes. This has been done without the knowledge or approval of the general population.

Whether the planes are being used by genocidal lunatics, or simply being careless with serious substances, it is not smart to ignore what is going on.