In January, New York City’s homeless population topped 50,000. On today’s show: we’ll look into the increase in homeless families and talk with a woman about how this happened to her. Leonard Slatkin explains what it is that conductors do, from running rehearsals to raising a baton to start a performance. Celebrated writer James Salter talks about his latest novel, All That Is. Plus, we’ll discuss the case of a stolen Tyrannosaurus skeleton, which is being returned to Mongolia.