Remembering Olivia Newton-John
The Australian actress and pop singer has died at age 73. Here's a look at her career, which included starring roles in classics like "Grease" and oddball movies such as "Xanadu," as well as five No. 1 hits. Plus, tributes from co-stars including John Travolta, and a deep dive into why we remain so hopelessly devoted to her most famous film.