http://wattsupwiththat.com/2014/04/11/methane-the-irrelevant-greenhouse-gas/
Also see:
Physicist Dr. Tom Sheahen: ‘Methane: The Irrelevant Greenhouse Gas’ – ‘Water vapor has already absorbed the very same infrared radiation that Methane might have absorbed’– ‘The tiny increases in methane associated with cows may elicit a few giggles, but it absolutely cannot be the basis for sane regulations or national policy.’
Study: ‘Methane emissions have a negligible impact’ on climate
