Windfall is the boldest profile of the world’s energy resources since Daniel Yergin’s The Quest. Harvard professor and former Washington policymaker Meghan L. O’Sullivan reveals how fears of energy scarcity have given way to the reality of energy abundance. This abundance is transforming the geo-political order and boosting American power.

Americans are pleasantly surprised about how their energy fate appears to have changed, in such a short time, with little notice or anticipation. Within the last five years, both actual US production of oil and gas and projections for future American production have changed dramatically. Whereas in the mid-2000s, experts predicted that the US should anticipate a future of severe dependence on imported natural gas, in 2012 Washington is debating the pros and cons of becoming an exporter of this resource. Even more quietly, domestic production of oil has increased, in large part due to the development of the tight oil in the Bakken formation in North Dakota and the Eagle Ford in Texas.