FILE - This Jan. 15, 2013 file photo shows Facebook chief operating officer Sheryl Sandberg at Facebook headquarters in Menlo Park, Calif. “Lean In” is now in its 15th printing and has

 

              FILE - This Jan. 15, 2013 file photo shows Facebook chief operating officer Sheryl Sandberg at Facebook headquarters in Menlo Park, Calif. “Lean In” is now in its 15th printing and has
FILE - This Jan. 15, 2013 file photo shows Facebook chief operating officer Sheryl Sandberg at Facebook headquarters in Menlo Park, Calif. “Lean In” is now in its 15th printing and has sold 600,000 copies just three months after publication, Bogaards said Thursday, June 6. Sandberg, Facebook's chief operating officer, has been encouraging a national conversation on how women can advance in their careers. (AP Photo/Jeff Chiu, file)