The hardcover encyclopedia that starts from the questions your child already asks. Ages 3–16.
★★★★★
★★★★★ 4.8 | Verified Reviews
100,000 Whys — Children’s Encyclopedia
Starts from questions kids already ask
1,000+ comic illustrations in six areas
Free Quiz Pack every order — more gifts with 2 and 3 books
Free shipping + 60-day money-back guarantee
60-Day Money-Back Guarantee
Free Shipping on Every Order
From parents who tried everything else first
“Reading at the table by night three.”
My daughter has never voluntarily put down a screen in nine years. The third night after this arrived, she was reading it at the table while I cooked dinner. I didn’t say anything — I was afraid if I acknowledged it, she’d stop.
“I ordered a second copy.”
My older one showed zero interest in reading. My younger one stole the book from her sister. Now the older one is asking when she gets a turn. I ordered a second copy.
“I called it a shelf decoration.”
My wife bought it. I called it a shelf decoration. Two weeks later, my eight-year-old explained why the moon looks bigger on the horizon. He’d read it that morning. I had no follow-up.
“She’d already found it in the book.”
My six-year-old asked why the moon follows the car. I said I’d look it up. She said she’d already found it in the book. That was day three.
How the habit forms.
Leave it within reach
No introduction needed. Put it where the questions happen — 9 in 10 children open it without being asked.
They find their question
Every entry starts with something they’ve already asked out loud. Why do apples turn brown? Why do planes fly?
The comic answers it
Big ideas land through comic illustrations built around how kids actually think — discovery, not a lecture.
One why leads to another
Each answer points to what’s connected, and two pages a day quietly becomes a habit. That’s the whole system.
Leave it within reach
No introduction needed. Put it where the questions happen — 9 in 10 children open it without being asked.
They find their question
Every entry starts with something they’ve already asked out loud. Why do apples turn brown? Why do planes fly?
The comic answers it
Big ideas land through comic illustrations built around how kids actually think — discovery, not a lecture.
One why leads to another
Each answer points to what’s connected, and two pages a day quietly becomes a habit. That’s the whole system.
9 in 10 kids open it without being asked.
Not because they’re told to — because the questions inside match the ones already in their heads. The child who ignored the bookshelf starts pulling this one out, and the parent who ran out of answers stops running out.
Every “why?” deserves betterthan “I’ll look it up.”
Every “why?” deserves betterthan “I’ll look it up.”
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100,000 Whys
Starts from their questions
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Learning Apps
Built around levels
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Starts from your child’s questions
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Screen-free
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Answers kids follow on their own
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Free gifts + 60-day guarantee
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Three Reasons to Trust It
Three Reasons to Trust It
9 in 10
Children open it without being asked
500+
Knowledge points across six areas
1,000+
Comic illustrations, not dry theory
HARDCOVER · AGES 3–16 · SCREEN-FREE
Every “why?” deserves better than “I’ll look it up.”
Starts from the questions they already ask
1,000+ comic illustrations
Free Quiz Pack with every order
60-Day Money-Back Guarantee
Before you ask
What age is this best for?
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Built for ages 3–16, best between 6 and 12. Younger children read it with a parent; older ones keep it as a reference they come back to.
My child only wants screens. Will this really get opened?
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It’s the most common worry — and the reason the book starts from questions kids already ask instead of topics adults chose. 9 in 10 children open it without being asked. If yours is the exception, the 60-day guarantee covers you.
What exactly is inside?
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Over 500 knowledge points across six areas — animals, plants, earth, space, the human body and technology — answered through 1,000+ comic illustrations, in a durable hardcover.
What comes free with my order?
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Every order includes the 500-Question Quiz Pack. Add a second book and the Curious World Wall Map comes with it; add a third and a Mystery Gift joins the box.
Why would I get more than one book?
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Each book in a set is a full copy — most families add one for a sibling or set one aside as a gift. Bigger sets also unlock the extra free gifts and the biggest savings.
What if it doesn’t land with my child?
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You have 60 days to decide. If it isn’t the book they keep coming back to, send it back for a full refund. Shipping is free on every order.