This episode of Fresh Air features an interview with Dr. Charan Ranganath, a neurologist and memory researcher, about his book "Why We Remember." Terry Gross interviews Dr. Ranganath, discussing topics such as the tip-of-the-tongue phenomenon, the difference between forgetting and retrieval failure, the impact of social media on memory, and how traumatic memories are formed and processed. Dr. Ranganath explains the competitive nature of memories, the importance of sleep for memory consolidation, and strategies for dealing with unwanted memories. The episode also includes reviews of "The Life of Chuck" and a remembrance of Alf Clausen, composer for The Simpsons. Additionally, David Bianculli discusses the upcoming live TV performance of "Good Night and Good Luck."
