Kids will love it- By: Janis Morris, 03 Mar 2008 I am a Grand Ma & improved my Grand Ma ratings with all my grand children when I gave this to a 7 year old for Christmas. Cool, awsome, & other such things that are not often associated with Grand Ma's. All that said, I enjoyed the book myself as I have a hard & fast rule, don't give anything you would not like to receive. It is also the sort of book you can go back to over & over again, and, I am assured, it has a high swap value!!!'So just tell me why is snot green?!- By: Faye, 31 Jul 2007 I bought this book today & I've got to tell you I just could not put it down! Believe it or not it is not boring! Kids & even adults will get a lot of fun out of this book. Every page is filled with cool questions & fascinating answers e.g. Will we be able to travel backin time? Will people have flying cars? Why is snot green? Find out all the answersin this book. You get lots of answers to the same question to help you understand more about the topic e.g. Why is the sky blue? (answer) Eh? Wait a minute - I thought air was invisible... (answer) & so on! It seems like the book will never end & that's a good thing! Anyway this is a great book & it is well worth the money. Buy it! You won't regret it!