John (Jack) H. Healy, a visionary geophysicist whose career was spent at the U.S. Geological Survey (USGS), died in the company of his family on 6 March 2012. His memory is cherished by all who had the privilege of knowing him. His scientific legacy survives him at the USGS Earthquake Science Center in Menlo Park, California, where research projects he founded continue to flourish.

Jack was born in Chicago, Illinois, on 7 August 1929 and grew up in Wausau, Wisconsin, a small, midwestern city noted for its lumber mills and a large, national insurance company. Initially an indifferent student, Jack,...

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