Commentator Nancy Lord recently encountered remnants of an ancient civilization. During a trip to Wyoming, she saw her first tipi rings. These dark circles of rocks are believed to have anchored the tipis of the Plains Indians. They reminded her how easy it is to lose something important, if it's not carefully nurtured. Commentator Nancy Lord is author of Fishcamp: Life on an Alaskan Shore and she comes to us from K-B-B-I in Homer, Alaska.