Michael J. Fox on Parkinson’s and staying optimistic

Michael J. Fox, one of the most famous actors to burst onto the scene in the 1980s, has become almost as famous for his public fight against Parkinson’s disease. With “Sunday Morning” host Jane Pauley, the “Family Ties” and “Back to the Future” star revisits stardom, raising $1.5 billion for Parkinson’s research and a new documentary about his life, called “Still “.