Facebook COO Sheryl Sandberg talks with Recode's Kara Swisher about her new book, "Option B," which she wrote after the sudden death of her husband, entrepreneur Dave Goldberg. This latest book is more raw than her first, "Lean In," combining Sandberg's personal journal entries with research about all kinds of adversity, as explained by her co-author, psychologist Adam Grant. Sandberg explains what most people get wrong about grief and how to talk to those who are in mourning. She also calls for a reexamination of corporate and public policies around parental leave, health care and bereavement.