From this book, young readers will learn why the stars glow, why marmots whistle, why a person hiccups, what is dangerous about lightning and what is wrong with the number 13! Answers to a variety of questions will help an inquisitive child broaden his horizons and get acquainted with amazing facts about the world around him. The book contains five interesting sections that will tell you about natural phenomena, the human body, the animal world, scientific achievements and culture of different countries. The books in the series contain only the most up–to-date information and the most up-to-date illustrations! And that's not all: at the end of each book there are fascinating tasks and games that will help you have fun and repeat what you have learned.