A variety of strong industries can help a city to maintain low levels of unemployment. "Traditionally, a strong factor [in a healthy job market] has been diversification," says John W. Budd, director of the Center for Human Resources and Labor Studies at the University of Minnesota. "So Minneapolis, for example, has a strong healthcare sector, as well as strong [production of] medical devices, as well as strong food processing and consumer products."
(Above: Scott Fahrenkrug, CEO of Recombinetics, is photographed at the University of Minnesota in St. Paul, Minnesota, October 12, 2011. Fahrenkrug is changing genes in pigs so they grow up with diabetes or heart disease. Through his Minneapolis-based business, Recombinetics, he plans to sell the pigs to companies and labs for research or to test medical devices and drugs.)