Jim Berklan, is a retired geologist who worked many years for the U.S. Geological Survey. He was also the first County Geologist for Santa Clara County (in northern California) and was in that position for 21 years. He has published over 50 scientific papers. He has been a popular guest on many network news programs and talk shows on the subject of earthquake prediction. Mr. Berkland claims he has developed a method for predicting earthquakes, and on his web site and in a monthly newsletter, he lays out a detailed set of signs and precursors that he uses for his predictions. He also lists dozens of major earthquakes he claims to have predicted.