Beef burgers, ham sandwiches, cheese slices, yogurt, bread. A good amount of the food you might eat on a daily basis is likely to have come from just three U.S companies: Tyson, Cargill and Dairy Farmers of America.

Minnesota-based Cargill is the world’s biggest food trader, selling everything from grains and beef to eggs and palm oil. Meat giant Tyson processes 35 million chickens, 424,000 pigs and 130,000 cattle every week in the U.S. And Dairy Farmers of America accounts for 30 percent of all the milk produced in the country.

And in addition to providing your breakfast, lunch and dinner, they are some of the world’s most-polluting companies.

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