‘Frank Mitloehner, a University of California, Davis, professor who places cows in air-tight tent enclosures and measures what he calls their \u201ceruptions,\u201d says the average cow expels \u2014 through burps mostly, but some flatulence \u2014 200 to 400 pounds of methane a year.<\/p>\n
More broadly, with worldwide production of milk and beef expected to double in the next 30 years, the United Nations has called livestock one of the most serious near-term threats to the global climate. In a 2006 report that looked at the environmental impact of cows worldwide, including forest-clearing activity to create pasture land, it estimated that cows might be more dangerous to Earth\u2019s atmosphere than trucks and cars combined.’<\/p>\n