Meat eaten by city-dwelling Americans produces more CO2 than the entire UK — but there are easy ways to slash it

Three brown cows behind bars.

The meat consumed in U.S. cities creates the equivalent of 363 million tons (329 million metric tons) of carbon emissions per year, a new study finds.

That's more than the entire annual carbon emissions from the U.K. of 336 million tons (305 million metric tons).