Bethany Hamilton, the famous surfer who lost an arm in a shark attack, discusses the new documentary about her life, Bethany Hamilton: Unstoppable, along with her husband Adam Dirks and filmmaker Aaron Lieber. The film charts Hamilton's story from childhood to motherhood, with an emphasis on her unending motivation in the face of incredible odds. Bethany Hamilton: Unstoppable will premiere at the Tribeca Film Festival at the Tribeca Festival Hub on April 20 at 7 pm, at Cinépolis Chelsea on on April 21 at 4:45 pm, at Regal Cinemas Battery Park on April 22 at 2:45 pm and at Regal Cinemas Battery Park on April 28 at 6:45 pm.  This segment is guest hosted by Alison Stewart.