No One Knows Exactly How Boxing Broke Ken Norton's Brain

LAS VEGAS—Ken Norton never fell down in 39 rounds of professional boxing with Muhammad Ali. But Ken Norton did fall down on Jan. 23, 2012, while posing for a picture after a press conference at the Lou Ruvo Center for Brain Health in Las Vegas. I saw it happen. Ken Norton, the esteemed special guest at the press… » 2/03/12 4:36pm 2/03/12 4:36pm