From Live Science:
For scientists concerned about greenhouse gas emissions, cow farts are nowhere near as problematic as their methane-laden belches. Now a new oregano supplement could stem the burps and reduce the potent methane emissions.
Worldwide, cows are responsible for 37 percent of the human-produced methane, according to study researcher Alexander Hristov, an associate professor of dairy nutrition at Penn State University. Most of that methane comes not from the backsides of cows, but from the gas they belch after digesting their food, according to Hristov and the Food and Agriculture Organization of the United Nations.
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My Comment: Belching creates more methane gas than farting .... that is news to me.
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