I've seen a number of Facebook friends link favorably to Bill McKibben's article "Global Warming's Terrifying Math," and it is a certainly terrifying article.
It got me wondering, however, what the overlap is between people who agree with McKibben, and those who are similarly terrified about the massive unfunded liability that the federal government faces with regard to Medicare (not to mention Social Security). Both problems share the feature of requiring significant economic pain now in order to forestall (potentially) greater economic/other pain in the future.
I'm genuinely curious what the overlap is. I haven't canvassed this, but off the top of my head, the only prominent blogger I can think of who has affirmatively expressed concern about both problems is Megan McArdle.