Pushing the Boundaries

Today's been-there, done-that travelers crave new experiences. In the past six years, adventure travel has grown 6 percent to 8 percent annually, according to the Salina, Colo.-based Adventure Travel Society. But while most people think of such travel in terms of challenging physical activities, incentive adventures can be something quite different, says Helen Nodland, whose Chicago-based company, Nodland Travel Enterprises, mounts educational programs in exotic locales. She defines incentive