When do you want me to start? http://boobs.pet/ rate my boobs One of the economists behind the research, Emmanuel Saez of the University of California, Berkeley, is a top researcher in the topic of wealth and income inequality. He won the John Bates Clark medal last year. The Clark medal is awarded to the most promising economists under the age of 40. Past winners have includes Paul Krugman of Princeton University, Lawrence Summers and Steve Levitt, co-author of "Freakonomics."