Author Art Davidson. A former planning director for the state of Alaska, Davidson has been a long-time opponent of the Alaska pipeline. He's just written an expose of the events that led to last summer's oil spill. The book's called "In The Wake of the Exxon Valdez: The Devastating Impact of the Alaska Oil Spill." It's published by Sierra Club books.
Marine botanist Sylvia Earle. She's been described as one of the most intrepid divers in the history of underwater exploration. She's swum with humpback whales, explored the kelp forests off the coast of California, and dove into the trenches off the coasts of Hawaii where she once went to depths of 1,250 feet, which at the time was the deepest any human had dove without a connection to the surface.