Top positive review
Great book, don't listen to the negative reviews.
Reviewed in the United States on August 13, 2015
It's not perfect but has tons of content. One of the reviews said it has misinformation because it classifies humans as "carnivores", but some recent studie shave classified humans as such "based on the percentage of meat in the typical human diet". See: http://www.npr.org/sections/thesalt/2012/04/20/150817741/for-most-of-human-history-being-an-omnivore-was-no-dilemma
Another negative review said the information is shallow and gave this example: "Some question do not even have answers like this one, 'why some animals are big and some are smalls?' the answer 'life happens everywhere it can on this amazing planet. life comes in every size, shape and color' ? what kind of answer is that?" Well, I think is a very good answer for the audience the book is intended for. Why are some animals big and others small? Because there are all kinds of animals in the world, some big and some small. I think it's a perfectly valid answer. If your kid needs more information you can teach him about evolution for an hour if you want. You have to understand the purpose of this book is having a lot of questions and a lot of content. If they start going deeper into answers then that means less content. I rather have more questions with simple answers than a few questions with 3 pages of an answer.
Finally, another reviewer seems to be confusing this book for something else and tries to show the "inaccuracies" but only comes off as a trying to display his knowledge of things. We get it, you know how to use wikipedia, guess what? This is a book for "KIDS", if you want to show off how much you know why don't you review a PHD book on physics?
This is a great book with tons of content and my kid loves it. It's not perfect, but that's why you're there as a parent.