US Geological Survey
U.s. Geological Survey: What Causes Earthquakes?
USGS provides the definition of a fault, the basics of earthquakes, the theory of plate tectonics, location of plates and earthquakes, and embedded links to related material.
![Story Behind the Science: Development of a Mechanism for Continental Drift [Pdf] Article](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "Story Behind the Science: Development of a Mechanism for Continental Drift [Pdf] Article")
Story Behind the Science
Story Behind the Science: Development of a Mechanism for Continental Drift [Pdf]
Article describing the history of scientific theories about continental drift, and the major researchers involved in this work.
Famous Scientists
Famous Scientists: Alfred Wegener
Find out about the life and work of Alfred Wegener, known for his achievements in meteorology and as a pioneer of polar research, and is most remembered as the originator of the theory of continental drift.