Pulled Apart

On today’s show: We’ll find out how the epidemic of post-traumatic stress disorder among the country’s veterans is spreading to their families. Writer, director, and producer Bill Persky looks back at the Golden Age of television and his work on “The Dick van Dyke Show” and “Kate and Allie,” and other hit shows. The curator of “Inventing Abstraction” at the Museum of Modern Art talks about how abstraction transformed art. Plus: this week’s Please Explain is all about our troubled postal service.