Baton Rouge Symphony Conductor Timothy Muffitt discusses his decision to retire as BRSO leader after two decades. Muffitt, the longest serving conductor and music director in the history of the BRSO,  will leave his post in 2020. Capitol Bureau Chief Mark Ballard of the Advocate on a week in which Exxon-Mobil made a startling announcement and Gov. John Bel Edwards made his long awaited official announcement. Best-selling author James Rollins on his long career and his latest work, “Crucible.” NYU School of Medicine Physician Leonardo Trasande talks about environmental risks to good health detailed in his book, “Sicker, Fatter, Poorer.”