Survivors and victims' relatives will this week mark the 20th anniversary of the 2004 Indian Ocean earthquake and tsunami, which killed more than 220,000 people across more than a dozen countries.

Within hours, the tsunami had claimed nearly 230,000 human lives and displaced millions of people in 12 countries. Thursday marks the 20 th anniversary of the 2004 Indian Ocean tsunami ...

People gathered in prayer and visited mass graves in Indonesia's Aceh province on Thursday to mark 20 years since the massive Indian Ocean ... on Dec. 26, 2004, triggered a tsunami that killed ...

BANDA ACEH, Indonesia — People gathered in prayer and visited mass graves in Indonesia's Aceh province on Thursday to mark 20 years since the massive Indian Ocean tsunami hit the region in one ...

Experts said they were “blind” to the Indian Ocean tsunami in 2004. Twenty years later, working toward a world without tsunami deaths is a challenge. By Katrina Miller The Indian Ocean tsunami ...

Some 1.5 billion people living along the coast of the Indian Ocean were caught unprepared in the 2004 earthquake and tsunami. Photograph By Santosh Verma/The New York Times/Redux On December 26 ...

The 2004 Indian Ocean earthquake and tsunami is considered one of the worst natural disasters in modern history. Occurring just before 7:59 am, the earthquake initiated the most prolonged ...

The day is forever seared in Neungduangjai Sritrakarn's memory: Dec. 26, 2004, the day the deadly Indian Ocean tsunami struck across South and Southeast Asia, after a 9.1 magnitude earthquake off ...

On December 26, 2004, a seismometer in Australia detected a large quake off the coast of northern Sumatra in the Indian Ocean (SN: 1/5/05). Researchers at the Pacific Tsunami Warning Center ...

On Dec. 26, 2004, a 9.1-magnitude earthquake beneath the Indian Ocean triggered a tsunami with waves up to 100 feet high, killing an estimated 230,000 people. Twenty years later, people gathered ...