Seventy-five tremors hit San Ramon, a small California city on 2. Here's what caused the swarm and why it isn't entirely ...

A 1.8 magnitude earthquake shook Irmo near Columbia, South Carolina on Feb. 16 about 3.1 miles from the Midlands town. It is the third in the row.

Earthquakes are unsettling, but a swarm of earthquakes can be downright scary, and some San Francisco residents are worried the Big One is near.

A swarm of earthquakes shook the East Bay on Monday morning.

The jolt of seismic activity Monday was among the busiest of a swarm that began nearly 3 months ago. Until the quake Friday, an earthquake swarm that began Nov. 9 around San Ramon had delivered 91 ...

Levi's Stadium is built 'like a shock absorber.' ...

Earthquakes usually strike without warning. But sometimes they come in clusters — dozens or even hundreds of small quakes concentrated in one area over days or weeks. Geologists call these clusters ...

An earthquake swarm is a series of small quakes that “may occur in a region for months without a major earthquake,” according to Britannica.. Getty Images/iStockphoto A swarm of a half-dozen ...

YouTube: Facebook: Instagram: Twitter: Chipotle expected to report another quarter of sales declines as it navigates tricky consumer backdrop ...