Violent Earth

S1, E104: Where and when the next mega disaster will strike - volcanic eruption, earthquake, tsunami or hurricane - is the focus of scientists around the world. Join tsunami scientist Jose Borrero of the University of Southern California on his trip to visit Banda Aceh with a National Geographic film team, one week after the December 26, 2004, tsunami - a tsunami so strong it actually moved the island of Sumatra a hundred feet.