And didn't I just know you would buy into the whole "chemtrail" idiocy too !!!
There are NO such things as chemtrails ... they are a psuedo-science hoax !!!
But in answer to your question ... this is what the ENTIRE chemtrail guff clings too, that somehow the difference between normal contrails and so-called "chemtrails" is that contrails somehow do not persist.
Which is utter, utter, utter nonsense ... for contrails last AS long as clouds can and do.
Contrails are made of FROZEN WATER VAPOUR.
Clouds are made of FROZEN WATER VAPOUR.
Therefore contrails CAN and DO last as long as clouds can ... period !!!
Contrails ... short-lived and persistent have been seen, known about and understood by REAL science since the advent of high-powered flight ... period !!!
contrails - Google Scholar
persistent contrails - Google Scholar
ONLY those
lacking in simple science fall for this moronic conspiracy ...