The Heaviest Things — J.H. Sweet

How can we lift something extremely heavy when we can't see or touch the thing? In an effort to help an elderly neighbor, ten-year-old Henry Goodwin sets out to discover how some of the heaviest and most mysterious things on earth have been moved. His research yields surprising results when he meets a real-life Paul Bunyan, has a conversation with the god Atlas, and takes a trip to the North Pole. However, even after traveling far and wide, Henry discovers that the answer to his own problem lies much closer to home.