This year’s Chautauqua program focuses on turning points of history. Actors portray Rachel Carson, the mother of the environmental movement; Amelia Earhart, the first women to fly solo across the Atlantic; and Jackie Robinson, who ended segregation in major league baseball. All speak on their convictions and answer your questions. July 9, hear Rachel Carson; July 10 hear Amelia Earhart; July 12 hear Jackie Robinson. 6:45pm at College of Southern Maryland, La Plata: 301-934-7828; www.csmd.edu/Arts.