Why do your feet age more slowly than your head? Is time travel possible? How did spies use clocks to complete secret missions? What caused the year of confusion? Why don't naked mole rats age? Find the fascinating answers to these questions and many more in this book full of mind-boggling facts about time.

Ideal for fact loving readers aged 8+.

Each book in this best-selling and award-winning series presents 100 bite-sized topics, with bold, graphic illustrations and clear text. Perfect for dipping in and out of, and for sharing with family and friends.

Discover more titles in the 100 Things to Know series:

1. 100 Things to Know About Science
2. 100 Things to Know About Saving the Planet
3. 100 Things to Know About Music
4. 100 Things to Know About Numbers, Computers & Coding
5. 100 Things to Know About Food
6. 100 Things to Know About the Human Body
7. 100 Things to Know About Space
8. 100 Things to Know About the Oceans
9. 100 Things to Know About Planet Earth
10. 100 Things to Know About History
11. 100 Things to Know about the Unknown
12. 100 Things to Know about Sport
13. 100 Things to Know about Wildlife

About the Author

Alice James (Author)
Alice James joined Usborne after working in primary schools for a while. She absolutely loves science, and over the years has lived with chimps, spent a month in the rainforest, studied Biology at Oxford University, and grown 200 carnivorous plants (not necessarily in that order). Whilst at Usborne Alice has worked on books on all kinds of science topics, from space to energy to the periodic table.

Tom Mumbray (Author)
Tom studied History at university before joining Usborne in 2018. Since then he's worked on books about Planet Earth, technology, maths and inventions (and learned lots of amazing facts about everything from paleoburrows to fireworks along the way).

Micaela Tapsell (Author)
Originally from Zimbabwe, Micaela has always enjoyed learning about different cultures and exploring the great outdoors. When she's not rafting the rapids of the Zambezi river or camping among the African wildlife, she is writing books on all sorts of delightful subjects, from science's greatest unknowns to the wildflowers of the world.

"About this title" may belong to another edition of this title.

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