Scienceclimate changemethane science-364-6444-rising-methane Rising methane: A new climate challenge Because CH4 is a potent greenhouse gas, rising atmospheric CH4 presents a major challenge to achieving the goals set out in the Paris Agreement, an international consensus to limit temperature increase to 2 C or, if possible, to 1.5 C above preindustrial levels. By Sara E. Mikaloff Fletcher, Hinrich Schaefer June 7th, 2019 Previous Next