I Wonder is a book that celebrates the feelings of awe and curiosity in children, as the foundation for all learning. The story is about a little girl named Eva who takes a walk with her mother and encounters a range of mysteries: from gravity, to life cycles, to the vastness of the universe. She learns that it's okay to say "I don't know," and she discovers that there are some things even adults don't know—mysteries for everyone to wonder about together!