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I bought the book to read out loud to my kids, 6 and 10, on a family holiday. They liked the book, especially my 10 year old. But I found it to be of very poor quality. Especially the second half that describes the team of kid geniuses solving the crisis in the Congo. The first half was better although the references to science laboured. But the simplification of problems and solutions in part two where just too much. My 10 year old was asking me follow up questions that I could not answer without telling him the book was overly simplistic. That aside the writing isn't great and is extremely repetetive.