I said nothing of all scientists are bought. There are scientists out there that have documented evidence of pH changes in the soil and that metals such as aluminum and strontium are responsible. And I never said that there is some evil behind it. I think whoever is doing this has some high minded idea as to why they are doing it. I have my beliefs just like you have yours. But neither of us can say for certain that they do or don't exist. And linger, yes linger. They do indeed spread out with air currents. But when you look or watch them they are still there. That's the definition of linger. Still present. A contrail goes away. You no longer see it. I find it interesting that these trails, whatever you want to call them, seem to be trying to block the sun ☀️. Maybe to save us from global warming. At least where I'm at these trails are usually done in the general location of the sun.