Harm J. de Blij (see IJ (digraph); closest pronunciation: "duh blay") is a geographer. He is a former geography editor on ABC's Good Morning America. He is a former editor of National Geographic magazine and the author of several books, including Why Geography Matters.
Dr. de Blij is a Distinguished Professor of Geography at Michigan State University. He has held the George Landegger Chair in Georgetown University's school of Foreign Service and the John Deaver Drinko chair of geography at Marshall University and has also taught at the Colorado School of Mines and the University of Miami.