I was curious about the photo that is always being shown as proof positive of chem-trials, so, I called NOAA, since it is their picture. They told me that what you see on the photo is aircraft contrails, and that the area with the highest concentration is an airbase that was used during the first Gulf War. Looking at a topographical map of the area and where the airbases were located, they are correct. It is aircraft contrails, not chem-trails.