So, for probably the first time there is a lawsuit about global warming. San Francisco and Oakland are suing the big oil companies. If man, and specifically the oil companies, are a significant contributor to global warming, I'm sure the AGW side will have no trouble proving it. I mean, we can debate it all day long here in the GC but when they win in court we'll all have to acknowledge that AGW is in fact a problem. Unfortunately, so far this isn't going well for the AGW side. Funny what happens when you actually have to support your position with, well, evidence and stuff.
Also doesn't help them that the judge actually likes to be knowledgeable about the topics his cases are about and not just rely on the expert witnesses the sides present.