The authors, whose works made up this collection, each speak in their own way about one thing, what steps need to be taken to keep our planet healthy. The works of K. Bulychev are imbued with concern for the fate of the Earth. A and V. Strugatsky, D. Bilenkin. The section of foreign fiction presents stories by M. Coney, R. Silverberg, B. Henriques. N. Georgiadis. In the “Publicism” section there is an article by E. Parnov “Memories of the end of the world. The Atomic Age and the Lessons of the Past." The book is intended for a wide range of readers.