Many people seem really interested in debating about the existance of a phenomenon called "Chemtrails", or "large-scale atmospheric spraying program".
Recently an article have been published on Environmental Research. It is not a real scientific study, but a survey among "experts". Most of them said that they don't believe that any "secret large-scale atmospheric spraying program" is ongoing. This kind of study looks actually a bit hilarious, cause, "if it's secret, why should they know it ? And if they know it, why should they tell you? It's a secret!
Anyway, I am of the same opinion. I don't believe any secret large-scale atmospheric spraying program is ongoin.
Meanwhile, I think that about this argument there is a bit of misunderstanding.
Climate changes induced by air-traffic are a reality, and at least two ongoing vaste scale atmosferic spraying program exist. BUT THEY ARE NOT SECRET!!!
- The first is cloudseeding.
Silver iodide or other substances are sprayed into the clouds to cause rain.
This is not secret, and even wikipedia has a page about it. It isn't successful one hundred percent of times, but it works, and is being used.
https://en.wikipedia.org/wiki/Cloud_seeding
- The second is ...airplanes!!!
Airplane's contrails are known to have an effect of decreasing the solar radiation, and decreasing temperature.
The first demonstration about this effect has happened on the days after the tragic happenings of 9/11.
The total air traffic stop for the 3 days after 9/11, caused an increase of temperatures of more than one degree.
This simple, but effective, statistical study have been published on the eminent scientific journal "Nature". You can read it at this link:
http://web.archive.org/web/20060503192714/http://facstaff.uww.edu/travisd/pdf/jetcontrailsrecentresearch.pdf
Maybe, instead of fighting each other talking about the existance of secret plans to control the climate, we should inform ourselves on what is going on, so that the growing technologies of geoingeneering will be used for the best interest of every human being.