March 2, 2019
Los Angeles Times
| Global | fossil fuels: emissions
Atmospheric CH4 has risen since 2007 and more rapidly since 2015 (> 1850 ppm). Generated as matter decomposes without much oxygen, CH4 comes from wetlands, bogs, sediments, and forest fires. 60% also comes from human activity – oil & gas (fracking, pipelines), farming (cow digestion), and rotting landfills, and is a 32x-more potent GHG than CO2.