A question-and-answer science encyclopedia for kids 9 and up, with one full page for every question. It's what you hand them when they ask something you can't answer.
🏆 Voted #1 Bestselling Kids Encyclopedia In 2026
100,000 Whys: Children's Science Encyclopedia
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Spark curiosity and build critical thinking
❤️
Help kids explore a world of why
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You risk nothing. 30 days. Don't love it? Full refund - and keep the book.
- Answers the questions kids ask most, one per page
- Plain explanations with a picture on every page
- AI and smart tech, finally explained
- Makes them smarter without feeling like learning
- The greatest competitive advantage you can give them
What Parents Are Saying
Real experiences from the parents and grandparents who bought it.
Andrea Sanchez,
Verified Buyer
This book is awesome. My son loves it. We read it every right . I homeschool him so we made it part of our day.
Lauren Mantle,
Verified Buyer
For the most part this is easy to read my kids love it. I love it.
Lori Miller,
Verified Buyer
It arrived in great shape my kid has been reading this every night before bed
Melinda,
Verified Buyer
My son loves this book. He finished it.
Miranda W.,
Verified Buyer
Would recommend to every parent with younger kids
Heather N,
Verified Buyer
This is so helpful! 🥰
Bobby,
Tehr
Verified Buyer
Great book for everyone! This gives me something to do everyday with my little girl
Carolyn L.,
Verified Buyer
Awesome book even for adults to enjoy! My grandchildren will love it!
Albert,
Verified Buyer
The price is unbeatable
Jacob S,
Verified Buyer
I absolutely love this product, gave it to my daughter and ended up borrowing it for myself
Ally S,
Verified Buyer
My son loved reading this book, he is so curious about the world. Fun way to connect with each other before bedtime or on long trips in the car!
Jack Rondel,
Verified Buyer
I don't leave reviews ever. This book earned that. Simple as that
Sarah R,
Verified Buyer
Just received it. It’s very well packaged and very well made. !
Sonya Wells,
Verified Buyer
AMAZING
Jessica,
Verified Buyer
I love this so much!
Why This Book Could Change How They Learn For Good
Because the best answer to "why?" isn't "look it up later." It's "let's find out together."
Why This Book Could Change How They Learn For Good
Because the best answer to "why?" isn't "look it up later." It's "let's find out together."
Week 1
You and your kid reads one-two pages a day
Week 2
Your kid starts reading without you
Month 1
Your kid starts to really understand what they're reading
Month 2
They start telling you things you didn't know.
Ready to Become the Parent With Every Answer? Start Tonight!
Join over 9,500+ parents who have already changed the way they answer, explore, and raise their children.
Big Questions. Exciting Discoveries. Endless Curiosity!
Here's exactly what's inside.
Big Questions. Exciting Discoveries. Endless Curiosity!
Here's exactly what's inside.
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Science Fields
AI, space, new energy, biology, earth, astronomy.
0
Pages
Full color, cover to cover.
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On AI & Tech
Chapter one, before anything else.
0
Guesswork
Reviewed for accuracy by the publisher.
See the Difference
Real questions. Real answers. Better conversations.
See the Difference
Real questions. Real answers. Better conversations.
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With the book
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Without it
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|---|---|---|
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Tonight's question
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Let's find out together | Look it up later |
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After dinner
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Guess what I learned | They disappear to their room |
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The car ride
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They read you facts the whole way | Nobody says a word |
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A rainy Saturday
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They're busy for an hour | You're hunting for something to do |
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In a year
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They've read the whole thing | They still ask you everything |
Parents On Facebook Are Going Crazy About This Book
Recently viral on Facebook
carlymoore
Happy mom! 10/10
jasmine_peralta
Amazing would recommend to everyone
billy.hunter
You can't beat the price!
marcus_the_3rd
The best purchase i've ever made
pattymemphis
Changed my life! Awesome book!
Money-Back Guarantee
Try the plan for 30 days. If you're not happy with it, contact us for a full refund. No questions asked.
Try It Risk-Free
100% Satisfaction
Free Gifts
Free Shipping
Money-Back Guarantee
Try the plan for 30 days. If you're not happy with it, contact us for a full refund. No questions asked.
Try It Risk-Free
100% Satisfaction
Free Gifts
Free Shipping
Frequently Asked Questions
Find answers to common questions about our products, shipping, returns, and more.
What exactly is included?
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The book itself. 6 science fields, 178 full-color pages, and every question answered on its own page with a picture.
How long does shipping take?
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Free US shipping, 5 to 15 business days, in plain packaging.
What is your return policy?
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30 days, full refund, no return shipping and no explanation needed. Email us and it’s handled.
Is this good for complete beginners?
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Yes. There’s no order to follow. Open to any question and read one page that day.
How many pages is the book?
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178 Pages. 6 Science Fields
Is this a subscription? What exactly am I buying?
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No subscription. One payment, one book, plus the free gifts.
