On the shores of the world's largest lake, a slick Chicago developer and a home-grown, small-town Michigan lake advocate collide over his proposed Superior Shores resort. She thinks he's ruining nature; he thinks he's showcasing it. Their differences generate a controversy that reverberates across the lake -- and sparks of another kind.Dave Dempsey is the author of four nonfiction books, including two about Great Lakes protection. He is also co-author, with David Lubbers, of "The Waters of Michigan.".