Methane rising faster than other greenhouse gases: researchers

"Methane is rising faster in relative terms than any major greenhouse gas and is now 2.6-fold higher than in pre-industrial times," said an international group of researchers under the aegis of the Global Carbon Project in a study published in Environmental Research Letters. Methane is the second most abundant greenhouse gas produced by human activity after carbon dioxide, with agriculture, energy production and organic waste rotting in landfills the major sources. In the first 20 years, its impact...