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i've been reading about how contrails disappear within seconds, 15 to 16 apparently.
is there any reasons for contrails to last longer than 7-10 min?
Contrails, which are ice particles vs chemtrails?
Some people say the longer lasting trails are “chemtrails”, but there’s no evidence to support this, as some trails have always lasted a long time.
How long lasting trails are created?
Exactly the same as the short trails. They just last longer because of the weather at that altitude (which is often unrelated to the weather on the ground). When it’s cold and humid at 30,000 feet, then contrails at 30,000 feet will last longer.
How long have chemtrails being going on for?
The chemtrail story was first told around 1997.