On Celeste Headlee’s final day as host of On Second Thought, we talked about an upcoming Atlanta event paying tribute to the heroines of Sesame Street. First, we re-visit a conversation we had in 2015 with Carrol Spinney, who plays Big Bird on Sesame Street. Then: for more than 40 years, Sonia Manzano lived on Sesame Street. She played Maria, who taught her young viewers some of life’s most important lessons. She also had a knack for storytelling. This week, Manzano comes to Atlanta’s Center for