NPR correspondent Nina Totenberg sits down with Nancy Cordes to discuss her new memoir, “Dinners with Ruth: A Memoir on the Power of Friendships.” Then, Serena Altschul meets sound artist Nikki Lindt, who has a unique way of capturing the world around us. “Here Comes The Sun” is a closer look at some of the people, places and things we bring you every week on “CBS Sunday Morning.”