In our cover story, David Pogue explores the tragedy of the OceanGate submersible Titan, whose five passengers were lost while diving to the site of the Titanic. Also: Jane Pauley interviews Tom Brokaw about his new book, "Never Give Up"; Anthony Mason talks with Paul Simon about his new album, "Seven Psalms," and about his hearing loss; Tracy Smith examines the public and private lives of actor Rock Hudson, subject of a new HBO documentary; Lee Cowan sits down with acclaimed singer-songwriter Lucinda Williams; and Conor Knighton explores the secret world of owls.