Spraying continued this morning as well. It's been going on sporadically throughout the past few weeks over the Pittsburgh area.

For those who are new to the subject, it's easy to tell a contrail from a chemtrail.

Chemtrails linger, and spread throughout the sky. They appear cloud-like. They are really full of alumininum and barium. The project, which has an open patent, is to use these metals to reflect sunlight and cool the earth.

Also for those that are just discovering these, the OP is right. Contrails are relatively thin ice crystals that form off of the wings of planes at specific altitudes (where the atmosphere temperature differs).

If you want to learn more about this subject I suggest watching "What in the World Are They Spraying" on YouTube. It's a pretty good documentary about the project, and studies of the metals in question that have been found in areas of the country where spraying is most prevalent. You can find the documentary on YouTube here: [link to www.youtube.com]