Our Planet Earth. A Large Illustrated Encyclopedia

Why are polar bears white? Is it true that mountains can move? How do volcanoes erupt? What is the difference between a tornado and a hurricane? This large encyclopedia contains answers to the most interesting questions. You will learn how the Earth was formed, get acquainted with unusual natural phenomena — from the northern lights to devastating earthquakes and tsunamis, see the diversity of the animal and plant world of the amazing planet we live on. The encyclopedia is beautifully illustrated and filled with numerous facts and hypotheses that will be of interest to readers of all ages.