On Second Thought Host Celeste Headlee announced in January she would step down from her post. Headlee has been with the program since it launched on GPB in 2014. Adam Ragusea talks with Headlee about her time as host, and what the future holds for public radio. A new book by religious scholar Reza Aslan challenges some very old ideas about religion, and how we describe a higher power. The book is, “GOD: A Human History.” It hit shelves in November. We caught up with Reza Aslan ahead of an