A new collection of essays lets 20 historians time travel to the period in history they most would have liked to witness first-hand. Editor Byron Hollinshead is joined by Mary Beth Norton (the Salem witchcraft trials) and Kevin Baker (the last meeting between Elijah Muhammad and W.D. Fard) to take calls and discuss some of history's unknowns. Plus, "Is Either Party Weak on Terror?" -- the next topic in the 30 Issues in 30 Days series with Congressman Jerrold Nadler and the Manhattan Institute's J. Michael Barrett.