Free US shipping on orders over $50 Order by Dec 12 for delivery before Christmas 30-day coffee-table guarantee
?Illustrated hardcover · ages 7–14

Feedthe why.

100,000 Whys is an illustrated hardcover encyclopedia built around the questions kids actually ask. Science, nature, history, space, technology and the human body, in one book they reach for on their own.

Get the book →
$39.903-pack from $23.30 a book
30-day guarantee Free shipping over $50 Shop Pay checkout
Why is the sky blue?
Why do cats purr?
Why is the sea salty?
?
The big book of real questions
100,000Whys
Space · Animals · The Body · Earth · and more
100,000 WHYS
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.

Sneak peek

Open it anywhere.

A few sample questions, shortened for the web. The real pages go deeper, with more facts and full illustrations.Sample pages, shortened for the web. The real book goes deeper.

Space & sky 12
Space & sky

Why is the sky blue?

Did you know?
Next page 13
?
The big book of real questions
100,000Whys
Space · Animals · The Body · Earth · and more

Sample pages · 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.

The honest comparison

Where should the next “why” go?

100,000 WhysTablet videosSearch engine
Written for ages 7–14✓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
Premium hardcoverAges 7–14Gold-foil title

100,000 Whys

  • Answers the questions kids actually ask, in words they understand
  • Science, nature, history, space, technology and the human body
  • Something they reach for instead of a screen
  • Gift-ready hardcover for birthdays and the holidays
Christmas delivery cutoffOrder by Dec 12
Choose your stack
30-day guarantee·Delivered in 6–8 business days
Shop PayApple PayGoogle PayVisaMastercardAmexPayPal
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 7–14. Younger kids love it read aloud with an adult; older kids read it on their own.
How big is it, exactly?+
A premium hardcover with a gold-foil title, made to survive years of curious hands.
When will it arrive?+
Delivery takes 6–8 business days. Order by Dec 12 for delivery before Christmas.
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 100,000 Whys →