Went and saw Kenny Broad, a diver, anthropologist and worker for National Geographic, at the Paramount theater in Cedar Rapids tonight. He was talking about blue holes, both inland and in the ocean, particularly in the Bahamas. He does extreme cave diving. It was a good talk with pictures and videos and he had a good sense of humor. I probably won't go but there are two other people from National Geographic coming to speak at the Paramount soon. One is a photographer of lions in Africa and the other is a scientist studying Mars. I didn't see anyone from here there but if you went, let us know! Thanks.