Earthquake Information from the USGS
- http://earthquake.usgs.gov/
- Gateway to US Geological Survey web resources on earthquakes, including information on recent quakes, earthquake preparedness, building seismically resistant structures, and current research topics.
Soil Liquefaction
- http://www.ce.washington.edu/~liquefaction/html/main.html
- About this phenomenon that is responsible for much structural damage in earthquakes. Includes physical explanation, photos of past events, identifying liquefaction susceptible soils, and building resistant structures.