When the U.S. Environmental Protection Agency rejected a request to waive the Renewable Fuel Standard in November 2012, it examined a wide variety of evidence, including modeling of the impact that a waiver would have on ethanol use, corn prices, and food prices.
Joan Magretta, M.B.A., Ph.D., is an award-winning contributor to the Harvard Business Review, where she was the strategy editor during the 1990s. Before that she was a partner at Bain & Company, a leading management consulting firm. Become a Fan.
Image: Portrait of Lisa Gherardini, wife of Francesco del Giocondo, known as the Mona Lisa (the Joconde in French) Image: Portrait de Lisa Gherardini, Ã©pouse de Francesco del Giocondo, dite Monna Lisa, la Gioconda ou la Joconde.