The necessity of eliminating the possibility of a large-scale nuclear conflict from the future of mankind is the most important problem of our times. There is no doubt that the probable aftereffects of such a conflict would by many times exceed the damage caused by the First and Second World Wars, the greatest in history. The question of the scale of the damage that would be inflicted upon liv ing nature by nuclear weapons has, however, not yet been fully clarified. It is clear that this damage would not be local, i.e., restricted to destruction in only the places of nuclear explosion. As a...