The United Nations International strategy for disaster reduction defines environmental as the reductions of the capacity of the environment to meet social and ecological objectives and need environment degradation is of many types. When natural habitats are destroyed or natural resources are depleted, the environment is degraded. Environmental change and human health, a special section of world resources 1998-99 in this report describe how preventable illnesses and premature deaths are still occurring in very large number. If vast improvement is made in human health, millions of people will be living longer, healthier lives than ever before. In these poorest regions of the world an estimated 11 million children, or about one in five, will not live to see their fifty birthday, primarily because of environment-related diseases. Child mortality is larger than the combined populations of Norway and Switzerland, and mostly due to malaria, acute respiratory infections or diarrhea illnesses that are largely preventable.