It's been five years since an 800-mile-long (1,300 km) section of colliding plates in Earth's crust unzipped and unleashed a 9.3 megathrust earthquake from Sumatra to the Andaman Islands. The rupture moved a block of earth as long as California about 30 feet. At least 230,000 people perished from the quake and the tsunamis that followed. We're remembering the disaster, as well as looking at the many lessons and discoveries been gleaned from it -- lessons that should never be forgotten.

Five years after the Great Sumatra-Andaman Quake and Tsunami, what have we learned? A lot!

Five years after one of the most devastating natural disasters in history, scientists are beginning to understand what caused this catastrophe.

The nation's most populated state isn't quite as threatened by tsunamis as once thought.

Washington State has one of the world's most sophisticated tsunami warning systems.

A slide show about the half-dozen ways Earth launches deadly tsunamis.

Tsunami researcher Jose Borrero chats about his work studying the wakes of tsunamis around the world, including Indonesia, after the 2004 tsunami.

Join the scientists studying the seafloor rupture created by the megaquake.
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