> A commonly cited statistic is that cows produce more greenhouse gases than all the world’s transportation combined, or 18% of all greenhouse gases. ... [snip]

> A commonly cited statistic is that cows produce more greenhouse gases than all the world’s transportation combined, or 18% of all greenhouse gases. ... [snip] ... A more accurate analysis of the data resulted in a much more respectable estimate: that cattle contribute less than 3% of global greenhouse gas emissions. http://chriskresser.com/the-real-environmental-impact-of-red-meat-part-1 http://chriskresser.com/the-real-environmental-impact-of-red...