Global warming, like acid rain, like ozone holes, like old-growth-forest-depletion, like "green energy," like electromagnetic fields, like the evils of trans fats and now sugar, is a fad.
And, like all fads and faddists, those really, really committed environmentalists are abandoning the cause and moving on to newer calamities with which we must all really really deal. The future of our planet is at stake, don't ya know.
What to expect from this bunch next?
But you can count on this: Whatever it is, it too shall pass.
Me? They lost me at cow farts.