CHARLES F. GRITZNER is Distinguished Professor of Geography at South
Dakota State University in Brookings. He is now in his fifth decade of college
teaching, scholarly research, and writing. In addition to teaching, he
enjoys traveling, writing,...
The planet we live on is a remarkable place, with incredible things happening everywhere, all the time. But have you ever wondered how or why these things occur? How the Earth was created? Why lightning strikes? How fossils form? What causes...