Apparently according to you, chem trails are made of 'steam' LOL. Since when did jet engines produce steam??
Well, that statement just prove you are little child, and that you do not know shit about anything. If you can read, go to Wikipedia and read about vapor trails. Hot engine exhaust + moisture in the air and things like that are the real reason of those trails. This is widely proved fact, and there is quite simple physics behind it, so it has been proved scientifically, mathematically and by chemistry, so it is safe to say it is a fact. Only fools and complete idiots are talking some hideous conspiracy, and those apes can't prove even a single word from their theory, so what would be true?