Just 2 days after baseball’s annual All-Star Game, a look back at an amazing, if tragic year in the life of an all-time all-star -- Lou Gehrig.  Dan Joseph, author of the new book, The Last Ride of the Iron Horse, on how, in 1938, Amyotrophic lateral sclerosis , ALS, was already starting to destroy Gehrig’s body, but the great Yankee first baseman played through it, helping the Yankees win their third straight World Series.  His career never make it through another baseball season.