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[General population movement and the environment].


 The nature and implications of contemporary population trends and movements are discussed and recommendations are made for the protection of the environment against their deleterious effects. Rapid population increase especially in the Third World is likely to lead to a population of 6 billion or more by the year 2000. The magnitude of the projected population and related problems are discussed. The contribution to declining growth rates of socioeconomic development and of government policies to spread the benefits of development and support family planning are described as are some successful national family planning programs. Greater intenational assistance for programs of population control and research is recommended in the interests of both the more directly affected poorer countries and of the richer countries that will be affected by increased immigration and pressure on resources and the environment. The status, treatment, rights, and contributions of the approximately 20 million migrant laborers worldwide are considered. Another class of migrants, refugees from religious and political persecution and wars, may have reached 250 million in the 20th century. Problems of absorbing such migrants are not likely to be solved until the principles of shared responsibility, asylum, and humane treatment are accepted by the international community. World population growth and industrialization are increasing pressures on the environment at an alarming rate. Although international agreement has been reached on the need to protect the environment, much resistance has been encountered to the necessary measures. An international regulatory body should be created for the protection of the environment.
