Not really.
The enviro-loonies have been doing the bait and switch ever since they started Earth Day. Back then, it was the population bomb. After that, it was pollution. After that, it was energy sources. Species extinction. Rainforest cutting. Now, its global warming.
Its the standard Chicken-Little mantra of 'the sky is falling', only the sky is always changing. Of course, the lawyers and executives that make up Environment, Inc. are the ones getting rich.