METHANE: NOT A PROBLEM FOR GLOBAL WARMING

While not as pronounced as carbon dioxide’s drop off in heating effect with concentration, the effect is still there such that at the current concentration of 1.9 ppm, each extra 0.1 ppm heats the atmosphere by 0.05°C. With the methane concentration currently rising by 0.1 ppm every 20 years, the atmosphere will get an extra 0.2°C of heating by 2100. 

Methane: Much Ado About Nothing • Watts Up With That?

And yet:

In a remarkable display of ignorance towards the very thing they propose to ‘save’, thirteen nations, including the United States, have entered into a pact that is effectively a death knell to agriculture. They have agreed to stymie food production by closing farms to reduce “methane emissions”, in a bid to combat so-called ‘global warming’.