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Kid's Encyclopedia "10,000 Whys" — Unlock Your Child's Full Potential

4.9 · 2,847 reviews
$39.90$79.8050% OFF

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  • Rewires curiosity into a lifelong learning habit
  • Boosts school performance, vocabulary & memory
  • Competes with screens — kids choose it over YouTube
  • Perfect for ages 6–12, gift-ready hardcover packaging
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“Best money I've spent on my kids' education outside of school. The conversations it starts are priceless.”
Jennifer L. Mom of three
“He used to beg for the tablet after dinner. Now he brings me this book and asks me to look things up with him.”
Marcus T. Dad of two
“I ordered a set for my whole class. The kids fight over who gets to read it at break time.”
Priya R. Grade 4 teacher
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Why 18,000+ families chose this book

One Book That Answers Every Why Your Child Keeps Asking

Not homework. Not a shelf ornament. The book children open on their own — and won't put down.

  • The Questions They Actually AskWhy the sky is blue, why we dream, why the dog does that — the ones that land at dinner
  • One Book, Every SubjectAnimals, space, the human body, weather, machines and everyday mysteries
  • It Wins Against The TabletKids reach for it by choice — parents tell us it's the only thing that competes
  • Built For Ages 6–12Plain language, big illustrations, made to be read for fun rather than for marks
“His teacher rang to tell me he was the most curious child in the class. All from a book he found lying on the coffee table.”
— Rachel M., Mom of two · Verified buyer

The results speak for themselves

Loved by 18,000+ Families Worldwide

Real parents. Real kids. Real results — tracked over 90 days.

94

of parents say their child's school performance improved within 60 days

📈 School performance

97

of kids voluntarily picked up the book without being asked, after day 7

📚 Voluntary reading

91

of parents said their child started asking deeper, more insightful questions

🧠 Curiosity & thinking

Results from a 90-day post-purchase survey of 1,200+ customers, December 2024 – February 2025.

Everything inside

One Book. Every Subject They're Curious About.

From the deepest ocean to the edge of the universe — if your child has wondered about it, the answer is in here.

  • Space & UniverseBlack holes, planets, stars, rockets and life beyond Earth
  • DinosaursWhy they went extinct, how we find them, what they really looked like
  • The Human BodyWhy your heart beats, how your brain works, why you dream
  • Oceans & Sea LifeDeep sea creatures, why the ocean is salty, how waves form
  • Weather & NatureThunder, lightning, tornadoes, rainbows and the sky
  • History & CivilisationsAncient Egypt, the Romans, great inventions and how the world changed
  • Animals & WildlifeHow animals survive, migrate, communicate and why some go extinct
  • Science & PhysicsGravity, light, sound, electricity and how everything works
  • Plants & BiologyHow plants grow, why leaves change colour, what makes things alive
  • The Brain & MindMemory, emotions, sleep, dreams and how the mind works
  • Technology & InventionsHow planes fly, how the internet works, what computers do
  • Earth & GeographyVolcanoes, earthquakes, tectonic plates and how Earth formed

What Parents Are Saying

“My 9-year-old asked me 'Mom, why do we have two eyes instead of one?' I didn't know the answer. He went straight to this book, found it, and spent 45 minutes reading about vision, brains and evolution. He came back and explained it to me. I almost cried. His teacher called two weeks later to say he was the most engaged student in class.”
Rachel M. Mom of two · Texas Verified buyer
“I was skeptical. My son doesn't read. He's a screen kid. I put this on the coffee table and didn't say a word. Day 3, I found him on the floor reading about black holes at 9pm when I thought he was asleep. He's read it cover to cover twice. That is not a normal thing for him. Buy it — it competes with screens and wins.”
David K. Father of one · California Verified buyer
“Bought 3 copies — one for each of my kids and one for my nephew's birthday. The dinner table conversations we've had because of this book are priceless. My 7-year-old explained tectonic plates to my mother-in-law. She was completely speechless. This book changes how kids think, not just what they know.”
Sarah J. Mom of three · Arizona Verified buyer
“My daughter has never once picked up a book without being forced. I left this on the coffee table on a Friday. By Sunday she had read half of it and was explaining to her grandfather why the moon doesn't fall out of the sky. He's a retired engineer. He was impressed. I was speechless. This book is something else entirely.”
Lisa W. Mom of two · Ohio Verified buyer
“Bought this for my grandson's birthday not knowing what to expect. He opened it, looked at the cover for about thirty seconds, and said 'is this actually mine?' He read it at his own party. His mum called me two months later to say he'd read it three times and was asking if there was a second one. Best gift I've given in years.”
Margaret T. Grandmother of four · Illinois Verified buyer

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