Что? Зачем? Почему?

How did the Earth appear? What is a comet? When did the first animals appear? What are the benefits of plants? Children constantly ask these and many other questions to adults, trying to learn about the world around them. In this edition, the little "why" will not only find answers to all his questions, but also learn a lot of new and surprising things. Mysteries of the Universe, natural phenomena, historical events, sights, inventions and discoveries - this encyclopedia tells about this and much more. Brief but informative articles are written in an easy and accessible language, and bright colorful illustrations accompanying the text will help young readers dream up and make reading the book more fun.