This Sunday, September 18, at 2 p.m., you should come to the Table Rock theater lounge for a unique, free, program. The Table Rock Historical Society will feature Dr. Bob Diffendal, Ph.D., a geologist. He is all about the geology of the Upper Paleozoic, Mesozoic and Cenozoic eras. Don’t worry about the fancy terms. That’s a time period that covers the last 300 million years or so. And he is also…