This event in the Pacific Northwest could cause an unprecedented rise in sea levels that can displace land and water, sinking three major cities.

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

Nevada is the nation's third-most seismically active state, ranking behind only California and Alaska ... and unmapped faults ...

Seismic symphonies of minor earthquakes may affect grand movements on major faults.

The area surrounding the lagoon, first proposed in 1964, has been a gathering place for the entirety of the human record.

A recent Virginia Tech study reveals that the Pacific Northwest faces a heightened risk of catastrophic flooding and mega-tsunamis, potentially reachi ...

Alaska and Hawaii ... There also has not been a quake of large seismic magnitude along the Cascadia subduction zone since 1700.

A study published in the Proceedings of the National Academy of Sciences of the United States has determined that there is a real risk that a 'megatsunami' could devastate the west ...

A huge earthquake is brewing along the Cascadia Subduction Zone that could destroy bridges, reshape the landscape and trigger a massive tsunami. Scientists have known about the looming danger for ...

The Great Alaska Earthquake was the most powerful earthquake ever recorded in the United States. Its violent tremors reshaped ...