Even among the liberals, a dawning realization is hitting. They're starting to understand that AGW is a faith among them, not a science. They know it's true, but they can't prove it. Doesn't make them any less devout, but it makes them increasingly nervous to try and throw down with the 'science is settled' line like they used to. It's anything but.
The only thing that's for sure is their devotion to the church of Gaia. Which is fine, but they're learning that scaring people with crap research is a losing proselytization technique.
You might be seeing a glimmer of light at the end of the tunnel. Watch to see if any of them become embarrassed over their earlier enthusiasm. If so, I suggest cultivating it. When the AGW believers hit that tipping point, AGW will fade into the sunlight like goldfish swallowing (1930s) or stuffing as many people as you can in a phone booth (1960s?)
A war on Facebook...something serious to discuss...that would be a change from what I see on Facebook...last time I looked!