The image of Osama bin Laden that flickered on Jack Shroder's TV was grainy and brief, but it was all he needed. Jack Shroder, a University of Nebraska at Omaha geologist who has done research in Afghanistan, says a videotape of Osama bin Laden gives important clues to where he might be hiding. "I turned to my wife," Shroder said, "and told her I know where he is." Shroder, a geologist at the University of Nebraska at Omaha who has done research in Afghanistan, said the videotape provides important clues on where bin Laden was when the tape was made. ...