you people are really "dum"!! Contrails is nothing but water vapor and it disipates soon as the plane passes , it does not leave long trails that linger and make clouds! Those are poisions that will kill you and your youngins. The real problem is that none of you are curious enough to even be aware of what they are doing to us all.This is happening world wide in every country and has been happening for years? Slow poision,you better wake up, it is called "Chemtrails"

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