U.S. policymakers have been concerned about the country's dependence on imported energy since World War II. Those concerns were highlighted in the 1970s when episodes of sharply rising oil prices ...

But the reality is more nuanced. As is oil itself, which comes as light and heavier crude. Before the fracking boom, the US used to produce the heavy stuff, which its refineries were designed to ...

HOBBS, N.M.—Chip Low’s drive through one of the richest corners of America’s hottest oil field takes him past all the ...

Those efforts come at the height of the largest oil and gas boom in American history, which centers on an expansive oil-producing region extending across western Texas and eastern New Mexico known as ...

The Permian Basin, a region spanning west Texas and eastern New Mexico, is the once and future heart of the greatest oil and gas boom in American history, a frenzy of production triggered by the ...

There are signs that Brazil’s offshore oil boom will continue unimpeded despite ... the owner of the remaining 10%, to design a new development plan for Tupi which will be delivered to the ...

This story was produced in partnership with the Pulitzer Center. It is part four in a four-part series. Read part one here, part two here and part three here. Correction: This article has been ...