The former "Grey's Anatomy" actor shared details of the progression of his symptoms and the emotional toll of living with the neurological disease.

ABC News correspondent Dr. Darien Sutton receive an exclusive look at the first FDA trial testing robotic telesurgery with the surgeon in Florida, the patient with prostate cancer in Africa.

Minnesota Lt. Gov. Peggy Flanagan remembers her colleague state rep. Melissa Hortman who was assassinated at her home Saturday, reflecting on the lasting impact Hortman had on state affairs.