From these photos and videos I think youd have to agree that these are not regular contrails but are in actual fact chemtrails. In scientific circles the whole process is called geo-engineering.

Just as a reminder, a normal contrail is caused by water vapour freezing in certain atmospheric conditions. These normally dissipate after a few seconds, but some may linger for up to a minute or two in the right temperatures. Here is a photo of a normal contrail with two huge chemtrails to compare it to. #buienradar