You can talk chemtrails all you want but without the how part I am not convinced. Where are the planes? Where do they load? How are they do they dump their loads? How can a plane load make any difference in the vast skies?
Watch “Sage of Quay Radio – Bob Shroyer – Anti-Geoengineering and Local Activism (May 2016)” on YouTube
The official line is that jets leave contrails, which are comprised of ice crystals. Here in Miami, anyone who cares to look up can see planes at very high altitudes and not coincident with any passenger flight paths, crisscrossing the sky spraying dense trails, which over a period of hours dissipate into fine misty blankets of haze that last for some time afterward. I have no idea what the spray is made of, but due to the fact that it lingers for hours on days when the temperature is 90 degree F, I am confident that it is not ice.
The clarity of the sky is markedly different on the days when there is no spraying. I draw no conclusion about what they are or why it happens, I am only describing what anyone can easily see for themselves.
farcevalue, and 
I do not know what the sun is made of, nor how it works, but when I look up I see it. Same with chemtrails.