|The global population of cattle produces significant quantities of methane (CH4), a greenhouse gas that, molecule-for-molecule, traps more heat than CO2. The United Nations claims that ruminant livestock are a significant factor contributing to global warming.|
According to the US EPA: Globally, ruminant livestock produce about 80 million metric tons of methane annually, accounting for about 28% of global methane emissions from human-related activities. With about 100 million cattle in the U.S. and 1.2 billion large ruminants in the world, ruminants are one of the largest methane sources. In the U.S., cattle emit about 5.5 million metric tons of methane per year into the atmosphere, accounting for 20% of U.S. methane emissions.
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