Ken Burns talks grief with Anderson Cooper

<p>Documentary filmmaker Ken Burns has been called “America’s biographer,” but in this moving conversation, he reveals how his own history has been shaped by early loss - the death of his mother Lyla when Ken was eleven years old. Join the community to share your story and watch Anderson's weekly streaming show All There Is Live at <a href="http://cnn.com/allthereis">cnn.com/allthereis</a></p>