Analysis: Methane Emissions Intensity Declines in Top Shale Basins Saturday, April 27, 2019 Increased natural gas consumption has generated a truly incredible story for the environment as U.S. greenhouse gas emissions have fallen to their lowest levels since 1992. But the air quality improvements go even further, as a new Energy In Depth analysis shows: The U.S. oil and gas industry is also making incredible progress in reducing methane emissions as production surges in America’s top s