stanley prusiner who has a discovery with creons challenged everything science thought about the root causes of infection. his discovery may lead to new ways dealing with alzheimer's. he's chronicled all of this in a must tone called madness and memory, the zofrnry of prons. then we turn to a conversation with terry crews who is starring in a comedy series "brooklyn 99 "on fox. the former nfl player has a new book out called "man hd: how to be a better man or just how to live with one." we invite you to join us on those conversations coming up right now. >>> the road to scientific breakthrough can be fraught with enough drama. stanley prusiner is the director for institute of neurodegenertive diseases and has written a new memoir, the discovery of preon, the principal of disease which reveals his dramatic journey from pariah to profit. he challenge everything that the scientific community thought they knew about path owe generals leading the way for that matter which eventually might become a breakthrough for treatments like alzheimer's, parkinson's and other forms of dement dementia.