Marine science research and the Darling Marine Center’s 50th anniversary will be the focus of the Maine Public Broadcasting Network’s “Maine Calling” radio show at noon Thursday, Aug. 6. Guests will include University of Maine scientists Bob Steneck, Larry Mayer and Chris Davis, as well as Heather Leslie, the center’s new director. The guests will read more MPBN’s ‘Maine Calling’ to Focus on Darling Marine Center Anniversary, Research