A 9.1 magnitude earthquake struck off the coast of the Indonesian island of Sumatra on Dec. 26, 2004, triggering a tsunami that killed around 230,000 people across a dozen countries in one of modern ...

A vigil is held in Thailand as people mark 20 years since the massive 2004 Indian Ocean tsunami that killed some 230,000 people across a dozen countries, making it one of modern history’s worst ...

Almost 1,000 kilometers off the Thai coast devastated by a tsunami 20 years ago, engineers lower a detection buoy into the waves—a key link in a warning system intended to ensure no disaster is as ...