This is a beautiful book that encourages children to learn about their world. Information is provided in bits, making it easy for children to digest. In addition, the internet links provide unlimited learning on the topics in the book. As far as the person who complained that they showed a photo of NYC without the World Trade Centers, I think you need to be aware that the book was published in 2002 and the WTC no longer was there, nor will ever be there in the future. Don't we need to depict the here and now truth in our books for children?