Mankind has learned more in the last 30 years about the disease of Alzheimer's than we have ever known before. Hank Greely explains Alzheimer's disease, some of the leading causes behind the disease, and shares some of his concerns for legal and social ramifications regarding Alzheimer's. Hank Greely, '74, the Deane F. and Kate Edelman Johnson Professor of Law and, by courtesy, of genetics, specializes in legal and social implications of advances in the biosciences. He has written on the social and legal implications of genetics, human cloning, stem cell research, and neuroscience, as well as on more general issues such as the ethics of human subjects research and human biological enhancement. This Stanford+Connects micro lecture was filmed on location in Scottsdale, Arizona. Stanford+Connects is a program of the Stanford Alumni Association.