A U.S. Marine helicopter loaded with food flies over Lampuuk in northern Sumatra on January 4, 2005, nine days after a tsunami killed most of the village's 7,000 residents and some 230,000 people on coastlines around the Indian Ocean. Many locals believe divine intervention saved the Rahmatullah mosque. ©John Stanmeyer/National Geographic
Hour 1: Tsunamis are nothing new, but how is the ever-increasing human population along coastlines amplifying the threat from these killer waves? We’ll talk this hour with National Geographic contributor Tim Folger. His article “The Calm Before the Wave” appears in the current issue of National Geographic Magazine.
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