I watched those two again yesterday. They are not exactly "happy movies" to watch but are very informative. I wolfed my way through half a bag of pistachio nuts while watching! ....but then I am greedy 
Of course there is some upsetting element to that information. However, I have not noticed too much unusual tree die-off in my area. Here, some trees do shed branches and eventually die, as is the natural course of events, but nothing worrying....so far.
However, if there is Aluminium "chaff" being introduced into the environment, even at high altitude, then over a period of time it is bound to affect all species, water sources, soil quality, etc..
In my area I have noticed that there are days when absolutely NO thick trails are present. Sometimes, those are weekdays, when one would imagine there would be just as much air traffic....
It is also possible to obtain data which shows the usual flight-paths of aircraft, and to compare that data with those persistent trails. They do not match up.
Commercial airliners, at least, do not fly systematically, in repeating grid patterns. Neither does a normal "contrail" start and stop, with big gaps in it along its length.
Of course there is some upsetting element to that information. However, I have not noticed too much unusual tree die-off in my area. Here, some trees do shed branches and eventually die, as is the natural course of events, but nothing worrying....so far.
However, if there is Aluminium "chaff" being introduced into the environment, even at high altitude, then over a period of time it is bound to affect all species, water sources, soil quality, etc..
In my area I have noticed that there are days when absolutely NO thick trails are present. Sometimes, those are weekdays, when one would imagine there would be just as much air traffic....
It is also possible to obtain data which shows the usual flight-paths of aircraft, and to compare that data with those persistent trails. They do not match up.
Commercial airliners, at least, do not fly systematically, in repeating grid patterns. Neither does a normal "contrail" start and stop, with big gaps in it along its length.
