Hinkle to Skeptics: Admit You're Wrong

I'm going a little farther afield than I usually do to find an opinion piece by award-winning columnist A. Barton Hinkle in the Richmond Times Dispatch that advises global warming skeptics to admit that they've been wrong all these years. It's time to stop howling at the moon, spitting into the wind and saying that global warming is an act of God (i.e., natural not anthropogenic). I've noticed that since the release of IPCC AR4, skeptics have taken to reminding us of the "Great Global Cooling Scare" of the 1970s as a proof that claims of global warming is wrong are misguided. Hinkle has noticed this, too, and says that A+B doesn't equal C in this case. (My take is that the global cooling scare was a blip in our continuous learning about the atmosphere and other global systems.)
Hinkle writes: "By now denials about climate change begin to have about them the air of arguments against evolution, which rest on the fallacy of thinking that if a single piece of a jigsaw puzzle is missing, then the rest of puzzle does not exist. Not every piece of the climate puzzle has been found."
That last sentence says it all. What many people don't seem to grasp is that this is an ongoing, evolving, ever-changing fluid situation. We'll never know everything about global systems and how they work together, but we can certainly identify problems and likely consequences. The atmosphere is heavily polluted and must be cleaned up if we are to have a healthy place to live.