The nation’s top universities have traditionally offered courses to an elite few. Only qualified students with enough financial resources need apply. But today, hundreds of thousands of people around the world are enrolling in classes at universities like Stanford and MIT. These higher ed institutions and many more now provide free online classes to anyone, anywhere. At the same time, other universities are offering on-campus students the opportunity to enroll in a growing number of online classes. As universities move toward instruction online, observers say higher education — and possibly the business model — is being redefined. Diane and her guests discuss the new generation of online learning and what it means for the future of higher education.