OF THE
TIMES
Most logical (and scariest) conclusion: the cold layer of the upper atmosphere has gotten lower and probably thicker and therefore, more airplanes flying at lower altitudes are forming contrails in that icy air which used to be the much higher domain of cirrus clouds.
Because, again, if you understand about the layers of the atmosphere, temperatures, winds, etc, then you will realize that what is happening is NOT spraying of the human population or even intentional weather manipulation, it is the EVIDENCE that our planetary atmosphere has changed dramatically in the past ten years or so. More like 20 because that was when I began noticing the changes in cloud formation.
Comment: Car with mother and girl swallowed by enormous sinkhole in Tver, Russia