Coastal communities from northern California to British Columbia live atop the Cascadia Subduction Zone, which spans about ...

California has dozens of earthquakes every day. Most are below 3.0 magnitude, so small that they aren’t felt.

A recent Virginia Tech study reveals that the Pacific Northwest faces a heightened risk of catastrophic flooding and ...

Alaska, Hawaii and areas along the mainland West Coast would be at risk if an earthquake erupts along the Cascadia subduction ...

Scientists are warning that a 1,000-foot-tall “mega tsunami” could potentially wipe a large chunk of America off the map – if ...

A new study warns of a potential 1,000-foot mega-tsunami striking the U.S. West Coast within 50 years. Triggered by a major ...

The loss of intertidal wetlands directly impacts ecosystem services such as water filtration, habitat for fisheries and ...

A powerful underwater volcano known as Axial Seamount off the Oregon coast may erupt. Though scientists say it poses no ...

Several earthquakes with epicenters beneath the ocean surface rattled the Northern California coastline early Monday. The ...

A SpaceX spacecraft has caused a sonic boom over California as it returned to Earth's atmosphere, and some on social media ...

To prepare for the Big One, California was counting on a $33 million grant to strengthen old apartment buildings.

The Cascadia Subduction Zone looks a little different than researchers thought. Here's what that means for "The Big One." ...