More than three-quarters of U.S. oil wells, collectively, make just 6% of the country's oil. They're called marginal wells because of how small their output is. But they're a big deal.

Legislation to prohibit oil and gas drilling in the North Florida wilderness along the Apalachicola River cleared a House committee Tuesday afternoon.

One company wants small nuclear reactors to power the energy-intensive process of purifying vast volumes of toxic “produced ...