Have you been outside yet? It's raining Mondays! BASEBALL: THE MELTING POT It's as good a day as any to discuss some baseball. The National Constitution Center will host this event, emceed by Jayson Stark and including speakers on topics including the Negro Leagues and Japanese baseball. With the summer creeping up on us, it's not a bad idea to look back at the beginnings of a sport that has displayed many of the......