Clockwise from top left: General Mills, Nestle, Dunkin Donuts, Panera, Tyson Chicken and McDonald's, among other big food companies, made commitments in 2015 to change the way they prepare and procure their food products.
Daniel Acker/Bloomberg/Getty; Justin Sullivan/Getty; Susana Gonzalez/Bloomberg/Getty; Daniel Acker/Bloomberg/Getty; Paul Sakuma/AP; Ulrich Baumgarten/Getty
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