USGS' Hsieh helped stop Gulf Coast oil spill

Tuesday - 5/10/2011, 5:51pm EDT

Paul Hsieh, research hydrologist, U.S. Geological Survey

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The oil spill in the Gulf of Mexico last summer finally ended when the work of Dr. Paul Hsieh, a research hydrologist with the U.S. Geological Survey, convinced federal officials that the containment cap on the ruptured well was working. That work has made Dr. Hsieh a Service to America Medal finalist in the Science and Environment category.

Hear the rest of our interviews with the 2011 Sammies finalists.