Manufacturing expanded in August at the fastest pace in three years as orders grew by the most in a decade, showing U.S. factories will help power the economy into the third quarter. The Institute for Supply Management’s index unexpectedly climbed to 59, the highest level since March 2011, from July’s 57.1, the Tempe, Arizona-based group reported today. Readings greater than 50 indicate growth. The median forecast in a Bloomberg survey of economists was 57. A drive to update plants and equipment is propelling gains in business investment that will probably keep American factories busy even as consumer spending shows ... (full story)