Nature is a miracle. Man is its particle. People are inextricably linked with nature by thousands of threads. Human life depends on the state of nature. In order to preserve nature, we must make it clear to children that everything depends on us, on our relationship to it, that a man is exactly nature itself. For the purpose of environmental education, the Association for Support and Development of Ecological Recovery System “Clean City” and the Central Museum of Soil Science named after V.V. Dokuchaev holds an environmental competition "We are for clean cities of Russia".