I had some private email with Dr. Phillips of envcan. I was impressed with his convictions that the jet stream is a river of air that blocks the cold north from freezing us. I looked it all up, and it is all just stories, like carbon warming.
In my concept of a happy world, we would use the Scientific Method.
Hypothesis-- the Jet Stream is a river of air, like any ocean current. It can transport items or molecules from Alaska to the UK.
Test: easy physics to check that out.
Most likely outcome: No, it's not a river of air. It is a horizontal linear convection cell, caused by the clash of warm and cold zones. It is a totally passive shadow effect.
Nobody really wants to deal with this story, just like all the other stories that we love so much. After I am dead, somebody might look at this. :)
ps. Wow, he's the busy guy of the year! Reference