100,000 Whys Book for Kids

The kids encyclopedia for the "why?" stage that never ends — 300+ real questions, every answer up front, and a WOW fact your kid will repeat all week.

Why is space cold if the Sun is so hot? Why do octopuses have three hearts? Why did people in castles throw their dinner bones on the floor? Kids ask better questions than most textbooks answer. This book keeps up.

100,000 Whys Book for Kids is a children's encyclopedia built the way curious kids actually read: an encyclopedia of why for kids ages 6–12, with one big question per entry, the answer in the very first sentence, and the strange-but-true details that make facts stick. It reads like an older sibling who just learned something incredible and can't wait to tell you.

Inside the 100,000 Whys encyclopedia:

The answer comes first. Sentence one answers the question. Then comes the why.

300+ big questions in 10 chapters — space, Earth, wild animals, the human body, mind-blowing science, how things work, weird weather, history & ancient worlds, tech & AI, and wild world records.

Real numbers in metric AND imperial. The Moon sits 384,400 km (238,855 miles) away — drive there at highway speed and it takes about five months.

Common myths busted at every chapter opener. No, the Great Wall isn't visible from space. No, goldfish don't forget you in 3 seconds.

Big science words, translated on the spot. Earwax has an official name (cerumen) — and now your kid knows it.

116 full-color pages with art on every one of them.

The smart-kid gift that doesn't feel like school — perfect for:

Birthdays, holidays, and "grandma, why is the sky blue?" emergencies

Boys and girls ages 6–12, reluctant readers included — short entries, big payoffs

Homeschool shelves, classroom reading corners, and family quiz night

Fact-checked like it matters. Every answer was verified against trusted sources — NASA, NIH, the Smithsonian and more — before it reached the page. If it's in this children's encyclopedia, it's true, and your kid will happily prove that to you at dinner.

Scroll up and grab your copy — the questions aren't going to answer themselves.