EXTENSION: Research how the federal government responded to the April 1906 San Francisco earthquake and detail what precedents this set for future government responses to natural disasters.

The San Andreas Fault, this scar visible from space, stretches across California for over 1,200 kilometers (about 745 miles). It separates two tectonic plates sliding against each other, shaping ...

The worst California earthquake in magnitude may have been the Fort Tejon/Kearn County blast in 1857, which measured a 7.9 on the Richter scale.

Cranes surround the Cypress Structure on Interstate 880, 19 October 1989 in San Francisco, following the earthquake estimated at 6.9 on the Richter scale that rocked California 17 October 1989.

At 5:12 a.m. on April 18, 1906, San Francisco shook violently. A 7.9 magnitude earthquake struck just 2 miles off the coast.

A ceremony was held in downtown San Francisco early Friday morning to mark 119 years since much of the city was destroyed from the 1906 earthquake and fire that followed.

A 3.3-magnitude earthquake rattled the San Francisco Bay Area near Pinole. Over 4,100 people reported feeling the tremor. See safety tips for earthquakes.

San Francisco firefighters, community leaders and city officials gathered Friday morning to mark the anniversary of the 1906 earthquake.

A 3.3-magnitude earthquake rattled the San Francisco Bay Area near Pinole. Over 4,100 people reported feeling the tremor. See safety tips for earthquakes.

A 3.3-magnitude earthquake rattled the San Francisco Bay Area near Pinole. Over 4,100 people reported feeling the tremor. See safety tips for earthquakes.

A 3.3-magnitude earthquake rattled the San Francisco Bay Area near Pinole. Over 4,100 people reported feeling the tremor. See safety tips for earthquakes.