What is it? Who is it?

The illustrated children's encyclopedia "What is it? Who is it?" will answer many questions of a little why-asker. You will learn what the atmosphere is, how our heart works, why a rocket flies, when dinosaurs lived, how a nuclear power plant is arranged, why water flows from the tap, whether there are underwater volcanoes, where sequoias grow, and much, much more. Among the authors are classics of popular science literature, biologist Igor Akimushkin, Alexey Smirnov, Doctor of Biological Sciences Alexander Tambiev, as well as young authors, our contemporaries. For younger school age.