Danielle Wiener-Bronner of CNN looks into the reasons why junk food has been going green. Tensie Whelan, Director of the NYU Stern Center for Sustainable Business, shares her input on the rationale behind why companies like Dunkin' Donuts, Coca-Cola, McDonald's, and Budweiser are becoming more sustainable. "This is a trend that's taking on steam because it's good business, said Tensie Whelan, director of the Center for Sustainable Business at New York University’s Stern School of Business. Consumers with several options need a reason to pick one brand over another. A promise to help protect the environment could be that reason." Read the article here.