Anyone who’s researched ways to lower their environmental impact has likely heard they should eat less meat, particularly beef. Even at scale, cows are an inefficient way to feed people—it takes nearly four tons of water to recoup one ton of beef, and many farming practices emit greenhouse gases and pollutants. Anyone who’s researched ways to lower their environmental impact has likely heard they should eat less meat, particularly beef. Even at scale, cows are an inefficient way to feed people—it takes nearly four tons of water to recoup one ton of beef, and many farming practices emit greenhouse gases and pollutants. Environment Phys.org – latest science and technology news stories