It's the deadliest tsunami on record, causing 230,000 deaths and $15 billion in damages. Triggered by a massive undersea quake off the coast of Indonesia, the 2004 Asian tsunami pounded Indian Ocean coastlines with waves up to 100 feet high, catching victims and the world's leading scientists by storm. Are we better prepared for the next big one? Where will the next one hit? See how early warning systems are currently being developed and meet the lucky few who survived this epic disaster.