Methane, from both ends of the digestive processes of cattle, is actually a more powerful 'greenhouse gas' than carbon dioxide and seems likely to have a strong impact on climate change. The recent claim that the actual emissions from cattle are some 11% higher than estimated is cause for concern (https://www.theguardian.com/environment/2017/sep/29/methane-emissions-cattle-11-percent-higher-than-estimated). The fact that more land appears to be cleared for the generation of cattle (and associated milk) is only likely to exacerbate our climate problems.
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