About the book: 2020 / "Science in Questions and Answers" is a universal encyclopedia for children that develops their horizons and talks about science, technology, nature, travel and inventions. From this book, the reader will learn which star is the brightest, who built the first submarine, why Moscow is called the “third Rome”, which bird flies farthest for the winter, why there are holes in Swiss cheese, when they began to brew coffee, how a chameleon changes colors and much more. -much more. The publication was prepared jointly with the magazines “Young Technician” and “Why?” For middle school age.