For the kid who asks "Why?" 100 times a day.
Why 10,000? answers the questions kids actually ask — about space, animals, the human body, weather and AI — with colorful comic-style pages they'll actually want to read.
- 10,000+ real questions kids ask, answered simply
- Space, animals, the human body, weather, AI & more
- Comic-style pages with a "Did You Know?" fact on every spread
- Perfect for ages 4–12 — read together or on their own
“Instead of just giving answers, it makes my kids want to ask even more questions. Perfect for curious young minds.” — Jessica L., Florida, 35 Years Old
See What's Inside 📖
Real pages. Real questions kids ask. Tap any video to flip through the book.
Why do rainbows appear? Why is the sea salty? 11 pages in 60 seconds
How the internet began, why we dream, how wounds heal
Where do rockets launch from — and why there?
How does AI understand what you say?
Questions Your Kid Will Finally Get Answered
Straight from the pages — the kind of "why?" that usually ends with "…I'll look it up later."
…and thousands more across space, nature, the human body, technology and everyday life.
Getting Started Is Easy
Three simple steps and you're answering the next "Why?" together.
Grab your copy
Secure checkout takes under a minute.
Check your email
Your order confirmation and everything you need arrive in your inbox.
Answer the next "Why?"
Flip to the question, read the answer together, and watch the follow-up questions start.
Parents Of Curious Kids Love It
Rated 4.76/5 by 1,475+ parents
Finally, A Book That Encourages Questions
“Instead of just giving answers, it makes my kids want to ask even more questions. Perfect for curious young minds.”
Learning Has Never Been This Fun
“He loves flipping through the pages and discovering something new every time. It has quickly become one of his favorite books.”
A Book That Keeps Them Curious
“My child is constantly asking questions. This book gives us so many interesting things to explore together.”
MONEY BACK
Love it, or it's free.
Read it with your child for 30 days. If it doesn't spark better questions and more "one more page" moments, email us and we'll refund you in full — no questions asked.
Questions Parents Ask
Everything you need to know before you grab your copy.
What ages is Why 10,000? for?
It's written for curious kids roughly ages 4–12. Younger kids love the comic-style pictures and reading together; older kids read it on their own and go straight for the "Did You Know?" facts.
What topics does it cover?
Space and planets, animals and plants, the human body, weather and seasons, everyday science (why light bulbs glow, how matches work), and modern tech like AI, rockets and the internet.
Is this a fun read or a textbook?
Fun first. Every question gets a comic-style illustration, a short plain-English answer and a "Did You Know?" fact — kids flip through it like a comic, not homework.
Is it really 10,000 questions?
The "10,000 Whys" series is one of the most popular children's science encyclopedias in the world — each spread tackles a real question kids ask, with a clear answer, an illustration, and a bonus fact. There's more than enough to outlast even the most relentless "why?" phase.
What if my child doesn't like it?
You're covered by our 30-day money-back guarantee. Email support and we'll refund you in full — no questions asked.

The next "Why?" is coming. Be ready.
10,000 answers for less than a cup of coffee — and the sale ends Sep. 30.
