Controversial topic you bring up @cognoscere. I would like to believe that these are just pretty clouds but it sure seems unlikely. Condensation wouldn't hang around for so long and clouds wouldn't just be trailing behind jets. I just hope that, overall, the chemicals are not excessively harmful. But, not sure we'll ever hear the entire truth.
It sure does look interesting though. Thanks for the share!
Resteemed..lets see what others think.
Your welcome, thanks for stopping by and commenting!