The spirit of adventure has long driven Americans to explore the unknown and broaden the knowledge of the world. All of the men and women in this book are American heroes from the twentieth century. Some trekked to the North or South Poles, others ventured into the sky and flight, while some even journeyed into space and to the Moon. They all succeeded in accomplishing historic feats of exploration or flight. Some died doing what they love most. They all captured the hearts and imagination of millions of others. Adventurers profiled in this volume: Orville and Wilbur Wright, Matthew Henson, Robert Peary, Richard Byrd, Charles Lindbergh, Amelia Earhart, Jacqueline Cochran, Neil Armstrong, and Sally Ride.