To promote interest in exploring the Red Planet and learn more about what would make a successful mission, the private Mars Society each summer sends volunteers who pay their own way to the uninhabited Devon Island, 900 miles from the North Pole. NASA also sends scientists to the rugged island, which comes as close to duplicating conditions on frigid Mars as Earth can offer. Louise Wynn was part of a seven-member international crew of four Americans, a Canadian, a Pole and an Australian.