The Book of Why — A Children's Encyclopedia

"My son used to ask me why about everything and I honestly ran out of answers. We grabbed this on a whim and now he carries it around the house like it is his personal science manual. Three weeks in and he is explaining to me why the sky is blue and how iron actually rusts. Completely unprompted."

"I gave this to my son when he started primary school. His teacher pulled me aside at parent teacher night to ask what we were doing at home because he was asking questions she had never heard from a child his age. Best investment I have made as a parent, full stop."

"My daughter has read it cover to cover twice. She keeps a little notebook next to it where she writes down her favorite facts. I did not expect a book to do that but here we are. She is 8 and more curious about science than most adults I know."

"We have a no screens after dinner rule and this book is the reason it actually works now. My son just grabs it on his own. He asked me last night why black holes do not let light escape and I genuinely had no idea. We looked it up together. That conversation was worth the price alone."

"Bought this as a birthday gift for my nephew and his mom texted me two weeks later saying he sleeps with it on his nightstand. He is 9 and obsessed with the space and dinosaur sections. She asked me to order another one for his younger brother."

"My son used to ask me why about everything and I honestly ran out of answers. We grabbed this on a whim and now he carries it around the house like it is his personal science manual. Three weeks in and he is explaining to me why the sky is blue and how iron actually rusts. Completely unprompted."

"I gave this to my son when he started primary school. His teacher pulled me aside at parent teacher night to ask what we were doing at home because he was asking questions she had never heard from a child his age. Best investment I have made as a parent, full stop."

"My daughter has read it cover to cover twice. She keeps a little notebook next to it where she writes down her favorite facts. I did not expect a book to do that but here we are. She is 8 and more curious about science than most adults I know."

"I homeschool my two kids and this has become a core part of our afternoons. They fight over who gets to read it first. The technology and inventions section had my 10 year old asking about how the internet works for three days straight. That kind of curiosity is exactly what I am trying to build."

"My son is not a big reader but this one is different. He picks it up himself and reads in short bursts throughout the day. His teacher mentioned at the last conference that he has been contributing more in class and asking better questions. I am convinced this book is behind that."

"We bought the 3 book bundle and gave one to each of our kids and one to their cousin. All three of them have been texting each other facts from the book. They are 7, 9, and 11. Watching them bond over something educational instead of a game was not something I expected but I am not complaining."

"I homeschool my two kids and this has become a core part of our afternoons. They fight over who gets to read it first. The technology and inventions section had my 10 year old asking about how the internet works for three days straight. That kind of curiosity is exactly what I am trying to build."

"My son is not a big reader but this one is different. He picks it up himself and reads in short bursts throughout the day. His teacher mentioned at the last conference that he has been contributing more in class and asking better questions. I am convinced this book is behind that."

"We bought the 3 book bundle and gave one to each of our kids and one to their cousin. All three of them have been texting each other facts from the book. They are 7, 9, and 11. Watching them bond over something educational instead of a game was not something I expected but I am not complaining."

"I bought the 4 pack for my classroom and my students have been passing it around during free reading time. Several of them have asked if they can take it home over the weekend. A book that kids want to borrow is a book doing its job."

"My daughter asked me why jets do not flap their wings like birds after reading the flight section. That question alone tells you everything about what this book does to a kid's brain. She is thinking differently now. More observant, more curious, always connecting what she reads to what she sees."

"I was skeptical because my son does not like to read. Left it on the kitchen table without saying anything. He picked it up before dinner and read for 40 minutes straight. That has never happened with any book we have bought him. The hardcover quality is also really solid, feels like it was made to last."

"I bought the 4 pack for my classroom and my students have been passing it around during free reading time. Several of them have asked if they can take it home over the weekend. A book that kids want to borrow is a book doing its job."

"My daughter asked me why jets do not flap their wings like birds after reading the flight section. That question alone tells you everything about what this book does to a kid's brain. She is thinking differently now. More observant, more curious, always connecting what she reads to what she sees."

"I was skeptical because my son does not like to read. Left it on the kitchen table without saying anything. He picked it up before dinner and read for 40 minutes straight. That has never happened with any book we have bought him. The hardcover quality is also really solid, feels like it was made to last."