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Burger King is staging an intervention with its cows. The chain has rebalanced the diet of some of the cows by adding lemon grass in a bid to limit bovine contributions to climate change. By tweaking their diet, Burger King said Tuesday that it believes it can reduce a cow's daily methane emissions by about 33%. Cows emit methane as a by-product of their digestion, and that has become a potential public relations hurdle for major burger chains.
