Dairy milk comes with a heavy environmental cost, including water pollution, soil loss, and airborne contaminants like ammonia that harms biodiversity and methane emissions that contribute to a warming planet, according to the World Wildlife Fund. A simple, tasty switch can reduce your milk-related carbon impact by half: Choose oatmilk, which produces 0.52 pounds of CO2 per 8-ounce glass compared to dairy milk’s 1.1-pound carbon footprint.

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