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?Illustrated hardcover · ages 6–12

Feedthe why.

10,000 Whys is a 174-page illustrated encyclopedia built around the questions kids actually ask. Space, dinosaurs, the human body and nine more worlds, in one book they reach for on their own.

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Why is the sky blue?
Why do cats purr?
Why is the sea salty?
?
The big book of real questions
10,000Whys
Space · Animals · The Body · Earth · and more
10,000 WHYS · CURIO CUB
7:42pm

You've answered “why” forty times today.

Why does the moon follow our car?
Why can't I see air?
Why do I have to sleep?
Why do volcanoes explode?

Some days you know the answer. Some days you say “let's look it up,” and the tablet answers first, with autoplay and an ad.

The curiosity is the best part. It just needs a better place to go. A place that answers in words a 7-year-old understands, and then makes them ask the next question.

Why it works

Question first. Answer second. Next question, always.

Most kids' encyclopedias are organised like a textbook. This one starts where your kid already is: mid-question.

Real kid questions

Every topic opens on the questions children wonder about every day, not what adults think they should know.

Pictures do the heavy lifting

Illustrated throughout, so a hard idea lands in a glance and short answers keep them turning pages.

Built for the couch

A hardcover that stays open flat, big enough for a kid and a grown-up to read side by side.

Look inside

Open it anywhere.

Space
Why is the sky blue?
12
The short answer

Next: why do cats purr? 13
?
The big book of real questions
10,000Whys
Space · Animals · The Body · Earth · and more

Questions like the ones inside. Keep scrolling to turn the page.

What's inside

Twelve worlds. One book.

From the deepest ocean to the edge of the universe. If your kid has wondered about it, there's a good chance it's in here.

10,000
Whys
17.6 cm 25 cm
Exactly what arrives

Bigger than a phone. Made to be held.

About the size of a colouring book. Drawn here to scale next to a typical phone.

Size17.6 × 25 cm
Pages174 illustrated
Thickness1.8 cm
Weight680 g · hardcover
The honest comparison

Where should the next “why” go?

10,000 WhysTablet videosSearch engine
Written for ages 6–12✓MixedWritten for adults
No ads, no autoplay✓RarelyAds first
Easy to read together✓One screenNot really
Leads to the next question✓Leads to the next videoLeads to more tabs
One-time cost✓Often a subscriptionFree
Gift-ready hardcover
?
The big book of real questions
10,000Whys
Space · Animals · The Body · Earth · and more
10,000 WHYS · CURIO CUB
Photo: inside spread
Photo: kid reading
Photo: lies flat
Video: flip-through

Drag across the book to spin it.

Hardcover174 pagesAges 6–12Lies flat

10,000 Whys

  • Answers the questions kids actually ask, in words they understand
  • Twelve subjects, from black holes to how planes fly
  • Something they reach for instead of a screen
  • Gift-ready hardcover for birthdays and the holidays
Christmas delivery cutoff (US)Order by Dec 12
Choose your stack
30-day guarantee·Ships in 1–2 business days
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From parents

What happens on the coffee table.

30DAYS
Our guarantee

Leave it out for 30 days.

Put the book on the coffee table and don't say a word. If your kid doesn't pick it up on their own, email us within 30 days and we'll refund your order in full.

Questions

Even the grown-ups have whys.

What age is it for?+
It's written for ages 6–12. Younger kids love it read aloud with an adult; older kids read it on their own.
How big is it, exactly?+
17.6 × 25 cm (about a colouring book), 1.8 cm thick, 174 pages and 680 g. Hardcover that stays open flat.
When will it arrive?+
Orders ship in 1–2 business days. Order by Dec 12 for delivery before Christmas in the US.
Does it cover how the universe began?+
Yes. It explains mainstream science, including the Big Bang theory, at a level kids can follow. Worth knowing if that matters to your family.
Can I buy several as gifts?+
That's what the 3- and 5-book stacks are for. Each book arrives gift-ready and the stacks ship free.
What if they don't use it?+
Then it's on us. Email within 30 days of delivery and we'll refund your order in full.

Tonight's “why”
is already coming.

Have the answer on the coffee table. Free shipping over $50, 30-day guarantee, and it arrives gift-ready.

Get 10,000 Whys →