Tsunamis

Debris from the Japan tsunami is just a fraction of the trash that washes ashore in Hawaii.

Movement of sediment could have altered ocean ecosystems.

'Meteotsunamis' can be just as deadly as their earthquake-driven cousins, because they usually hit without warning.

More people killed by tsunamis in Caribbean than in Hawaii, Alaska and California combined.

Giant landslide tsunamis struck Hawaii three times in the past 250,000 years.

History of past tsunamis and earthquake discovered in landslides buried in Lake Tahoe's clear waters.

A re-creation of Seaside, Ore., shows that buildings can magnify tsunami impact 80 to 100 times.

The exercise will be run in 19 countries.

A 1929 tsunami killed 28 people in Newfoundland.

A rock fall spurred a tsunami on Lake Geneva, suggests modern threat.