Boston-based Northeastern University is now offering a third doctoral degree program through its Charlotte campus. The UNC Board of Governors approved a doctoral degree in education last week, making it the school’s third doctoral degree. The first two — in nursing and physical therapy — were approved in May. They were the first to be approved for a university not based in North Carolina. Cheryl Richards is the CEO and dean of the Charlotte campus. She says a doctor of education or EdD is different from a PhD because it’s not focused on research.