New sensor technologies and computer algorithms that allow us to predict earthquakes, floods and famines before they happen. So now we're safe, right? Wrong. The big question is how we'll use this information, and whether we can warn people in time.
Massive earthquakes in the Indian Ocean off the coast of Sumatra are just the beginning. Researchers expect a 30-year cycle of mega-quakes like the one that caused the 2004 tsunami.