"if you cannot prove it, you do not know it’s true."

"The Corn Belt is a gift of the gods—the rain god, the sun god, the ice god and the gods of geology. In the middle of …"

"Man is a product of the earth’s surface. This means not merely that he is a child of the earth, dust of her dust; but…"

"An important characteristic of plains is their power to facilitate every phase of historical movement; that of mounta…"

"Over my career, I have collaborated with dozens of excellent scientists from a variety of disciplines to conduct rese…"

"I investigate how forest processes affect water flow dynamics and pathways in soil and streams, and conversely, how w…"

"Though many of our geographers give most attention to special phases of their study, there is a common ground upon wh…"

"All of my research involves a combination of field experimentation, field observations and laboratory analysis, and i…"

"Map-makng is very old, and has been practised by the most primitive peoples for many ages. Rude scratches on many roc…"

"The ultimate goal of my research is to improve our knowledge of how changes in climate and land-use will affect fores…"