A massive methane plume detected last month over Kazakhstan occurred near a major pipeline that supplies natural gas to China.
The cloud was observed roughly 100 kilometers (62 miles) west of the largest Kazakh city of Almaty on July 24, and had an emissions rate of more than 200 tons of methane an hour, according to an estimate from geoanalytics firm Kayrros SAS. That amount of the super-warming greenhouse gas would have roughly the same short-term climate warming impact as the annual emissions of 10,000 cars in the UK.
