No, not six degrees of actual temperature increase, but six degrees of separation between every activist’s issue and global warming.  As pointed out by Tom Nelson, it should be increasingly obvious to everyone what some of us have been saying for years — the global warming scare is not driven by science, but is a vehicle for pushing a broad range of socialist / progressive issues.  Today’s example:  Dams on the Klamath River case global warming.  The mechanism?  Well, its a little hard to grasp because the article is so poorly written (don’t they employ editors on this paper?) but apparently the dams increase algae which in turn off-gasses methane which is a greenhouse gas.  Of course, common sense says this effect is trivial, and ignores other effects in the entire system, but the author treats it like he is playing a trump card.