An ad ran in the Washington Post a while back assuring everyone that the U.S. isn’t running out of natural gas (PDF). Indeed, North America has 120 years worth!
Scarcity? What scarcity?
(Note, however, 50% of the alleged future nat gas is bound up in shale. Kinda dirty.)
The ad is from the American Clean Skies Foundation, which appears to be for nat gas what ABEC is for coal.
(Also mildly amusing: the ad quotes me.)