Jonah Goldberg is right. This is hilarious!

By contrast, the WBGU study says the United States must cut emissions 100 percent by 2020—i.e., quit carbon entirely within ten years. Germany, Italy and other industrial nations must do the same by 2025 to 2030. China only has until 2035, and the world as a whole must be carbon-free by 2050

That's right folks! Carbon-free! Sit down, hold your breath, don't exhale. Don't move, don't fart. Don't use any energy whatsoever. This is how absolutely silly this "debate" has become. It's not really a debate, though, is it? It's a series of ultimatums, and this is the ultimate ultimatum. Create a society that produces no carbon and do it in 10 years. No matter that all of civilization, starting with fire and ending with electricity, has been generated by harnessing carbon-based energy. Just stop it all! Now!

I would add "walk to work" to the to-do list, but walking and working are impossible in a carbon-free society.