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Join us as we talk with Dr. William Fry, emeritus professor at Stanford University and the father of gelotology, the study of humor and laughter, and their effects on the human body. The Exploratorium's Ron Hipschman shows how a double disk with a string attached is a great way to study the physics of motion. Then Captain Yo and Doc Popular astound with amazing yo-yo tricks. A video portrait of Barrow, Alaska, the northernmost settlement in the United States. Craig George and Glenn Sheehan explain how scientists have learned from Iñupiaq hunters to make more accurate counts of bowhead whales. Interview with Ice Stories correspondent and archeologist, Ann Jensen. Shots of research vessel in the Barrow boat basin near Nuvuk. Daniel Lum talks about the importance of the Bowhead whale to the native Barrow community. Daniel Lum talks about the traditional village site in Barrow called Nuvuk. Daniel Lum talks about the changes in ocean ice near Barrow. Drive by shots of the hunting camp or "duck camp" near Point Barrow, AK.