As music fans around the world mourn the death of David Bowie, host Tom MacDonald looks back at rare outtakes from his album ‘Young Americans’ recorded in Philadelphia. Katie Colaneri provides an update on the stalled investigation of the pig head thrown at a North Philadelphia mosque. Kevin McCorry reports on the Philadelphia School District’s approving of two more charters while rejecting another. Shai Ben-Yaacov talks with Tavis Smiley on his book “The Covenant with Black America 10 Years Later.” Peter Crimmins reports on a $5 million grant being given to the Wilma Theater. And Franklin Institute Chief Astronomer Derrick Pitts takes a look at what is happening in the sky this week.