From yet another scoff-worthy Washington Post climate hoax editorial: "Mr. Revkin points out that perhaps the biggest unknown that will affect the future of the climate is human behavior"

Global warming detailed in new temperature records - The Washington Post

The most dramatic implication of the study is not the magnitude of the current warming but its extremely rapid pace.
...Michael Mann, a prominent climate scientist, suggested to the New York Times’s Andrew Revkin that the temperature estimates match more robust records of recent temperatures so well that their conclusions should be taken seriously. They should also spur more research.
...
...Mr. Revkin points out that perhaps the biggest unknown that will affect the future of the climate is human behavior.