Let me be the first. They are clouds and contrails.
A "normal" cumulus cloud, a medium-sized puffy one, contains 550 tons of water. You cannot possibly spray that much material. It would take a
fleet of 50 planes per cloud to do so.
What you see behind a plane is the condensation caused by jet fuel burning in a jet engine. Just like your car in the winter, but much higher up and
much colder. The plane's exhaust provides lots of water and pollutants to cause the water already in the atmosphere to condense and create a cloud.
They are the same make-up as a cloud (water in some form and pollutants), and they will spread, move, dissipate, drift.....everything a regular cloud
does.
They have been studied for decades, with lots of science. The earliest science publication I can find online is from the end of World War 1. They
are still studied today, because they persist and spread. It's not known how much this effects the overall climate; some reports show a cooling
effect during the day but a warming effect at night which cancels each other out.
There have been tests of the trails, taking samples from the trails from specially outfitted planes. It has always shown just the chemicals of
exhaust. Just like any gas engine would.
People who believe in "chemtrails" will say that a real contrail will dissipate quickly and a "chemtrail" will spread and persist for hours. They
are wrong. They apparently forget that clouds can last for hours and spread to cover the entire sky. So can a contrail. On September 12, 2001
there was only six airplanes in the sky. They made contrails that persisted for up to 10 hours and spread out to cover 7898 square miles. From just
six planes.
Source Now imagine a normal flight day. They
will spread out. It's one of the prices we pay for having airline travel.
People will also think that the patterns of grids and "x" are somehow something to be suspicious about. Wrong again. Planes fly in all directions,
and when they leave contrails, the contrails will travel in all directions. There are route corridors that planes use for navigation, so seeing
contrails in lines is normal. You should read up on how planes navigate to understand. But really, just take a pencil and paper and try it
yourself. Or get the "US Scheduled Flights" app on Google Earth. Click on the airport around you and see how many planes there are over you. And
where they will be flying. Then go to airports not far from you and see how many planes just fly over. There are lots of planes in the sky, and most
of them can produce contrails when the conditons are right.
If you consider the logistics, you would need thousands of planes flown by thousands people from hundreds of airports. And no whistleblowers? That
is not going to happen in the internet age.
"Chemtrails" as a plan to do anything would be the most obvious, high-priced, high-maintenance, scatter-shot way to deliver anything at anytime by
anybody. If you just sit down and think about it, it gets sillier as time goes by. Please, research both sides of the issue before deciding. I
reccommend highly
Contrail Science
for the science and logic behind what people see and say about the matter. I don't recommend any particular "chemtrail" site, because they are all
wrong.