Global emissions of methane, a potent greenhouse gas, have soared over the past decade, according to two new studies that tracked growing sources of the odorless, colorless gas. The increased methane, combined with carbon dioxide and other greenhouse gases, could warm Earth’s atmosphere by 3 to 4 degrees Celsius before the end of this century. “This completely overshoots our budget to stay below 1.5 to 2 degrees of warming,” said Benjamin Poulter, a research scientist at NASA’s Goddard Space Flight Center in Greenbelt, Maryland. Poulter and his colleagues found that since 2000, the biggest increases in methane emissions came from agricultural activities — particularly from livestock, such as cattle and sheep — and the fossil fuel industry, which includes coal mining as well as oil and gas production.
By Denise Chow. NBC News. July 14, 2020.