Scattered throughout history are the compelling stories of pioneers whose groundbreaking discoveries resulted in tremendous achievement and progress. Such heroes can be found among such diverse groups as scientists, inventors and explorers. Yet they have in common their reliance on reason, their unfaltering persistence in the face of adversity, their dedication to excellence and their unerring belief in the integrity and the efficacy of the individual. Whether they are solving great scientific problems, bringing tremendous technical advances or opening up an entire continent, it is these characteristics that separate the trailblazing pioneer from the rest of the crowd. Join us as we recount the exciting stories, adventures and accomplishments of four such pioneers: Thomas Edison (presented by Elan Journo), Charles Darwin (presented by Keith Lockitch) and Lewis and Clark (presented by Debi Ghate).