Books in the 100 Things to Know series

Did you know you cry two types of tears? And up to 30 trillion red blood cells pass through your heart in a minute? With colourful, infographic-style illustrations this book is packed with surprising facts and useful information on exactly 100 topics about the human body. A useful reference book for home, school and general knowledge quizzes.

Did you know that rain sometimes falls red? Or that the equivalent of one truckload of plastic is dumped in our oceans every minute? This visually stunning book is filled with 100 fascinating facts, bright, infographic illustrations, information on ways we can help our planet and links to specially selected websites to find out more.

Science is a huge topic, but this friendly book breaks it down into bite-sized chunks, making it an accessible introduction for anyone who wants to find out about this fascinating subject. Highly illustrated, in a pictorial, 'infographics' style, with snippets of information about all aspects of science from particle physics to genes and DNA.

A fun and informative book packed with 100 fascinating things to know about space, from how to escape a black hole to why astronauts learn wilderness survival skills. With bright, infographic-style illustrations, detailed facts on every page, a glossary and index, and internet links to specially selected websites for more information.

Did you know that mammoths and pharaohs walked the earth at the same time? Or that over 30 types of gladiators fought in ancient Rome? This fascinating book is filled with 100 historical facts, bright, infographic-style illustrations, a glossary and index. There are also links to specially selected websites with video clips and more information.