In 2004, a 9.1 earthquake struck off the coast of Sumatra in Indonesia, triggering a tsunami and series of tidal waves that became one of worst natural disasters in recorded history.

Tsunamis pose a risk to the entirety of the California coast. But should a major one strike, how bad could it be?

Concerns about complacency were high on the agenda as some of the world’s leading tsunami engineering experts gathered on ...

Before the tsunami Theo (left) and Louis traveled around the world with their adventurous parents. Louis Mullan and his younger brother Theo were on vacation in Thailand on Dec. 26, 2004, when the ...

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, one of the ...

On 20th anniversary of world’s worst tsunami, experts warn of complacency. More than 227,000 people were killed in the December 26, 2004 Indian Ocean tsunami, and experts warn it could happen again.

A single tsunami likely won't cause the worst-case scenario for every region. But in total, more than 680,000 Californians are in a tsunami hazard area during the daytime.