The United States is flaring so much natural gas into the atmosphere - burning it as oil-field waste rather than extracting energy from it in power plants - that it now leads the world in the growth rate at which it is trashing that energy source.
Evidence of the trend can be seen flickering in the night across western North Dakota, where new oil drilling in the Bakken shale formation there has helped propel a surge in US flaring since 2007. As is often the case, many companies find it cheaper to burn off gas that emerges in new oil fields, rather than build pipelines and facilities to collect it.