Skyrocketing costs, restrictions on care, millions uninsured - few of us would disagree that the U.S. healthcare system faces big challenges. Now there's a new approach to improving the system from the Harvard School of Business. Michael Porter is co-author of Redefining Health Care: Creating Value-Based Competition on Results. He was in Cleveland this week at the Cleveland Clinic, where he spoke with ideastream's Karen Schaefer. He says the basis for fixing healthcare is competition.