The “shale gale” sweeping across North America the past few years has more than doubled the size of the discovered natural gas resource in North America  —  enough to satisfy more than 100 years of consumption at current rates, according to a major new analysis of the leading unconventional gas plays in North America by IHS Cambridge Energy Research Associates (IHS CERA).

The study, Fueling North America’s Energy Future: The Unconventional Natural Gas Revolution and the Carbon Agenda, says that the shale gale, the recent expansion of natural gas resources, ...