Roy Plotnick has yet another insightful blog post over on Medium.  Take his advice, get out and experience nature first hand!

I began teaching physical geology in Fall 1982. Like all other instructors of this type of course, I would discuss a wide variety of landforms and show textbook provided slides (you know, pieces of film in a cardboard mount) of them. But in nearly all cases, I had never seen them with my own eyes. The following summer, my wife and I drove from Chicago to San Juan Island, Washington. For the first time I walked on a glacier, saw alpine topography and stream terraces. I turned to my wife and said, “I wasn’t lying.”