Supershear earthquakes are more common than previously believed, some scientists say — carrying potentially profound risk for communities across California.

Most Californians are familiar with earthquakes. But researchers say the state faces an overlooked threat: "supershear" earthquakes that move so fast they outrun their own seismic waves. Subscribe to ...

Supershear earthquakes, which cause intense shaking, are more common than once thought, posing a risk to California. New research urges updates to seismic forecasts and infrastructure assessments, ...