CONTENTS
SUPPLEMENTAdditional Advocacy Resources
July, 1999 Series J, Number 49 |
Protecting the Environment Every country can do something now to assure a liveable environment for generations to come. To varying degrees, all countries can conserve natural resources, use cleaner production technologies, manage resource supply and demand better, and slow population growth.
Slowing Population Growth In developing countries family planning programs have played an important role in slowing population growth. Without access to modern contraception most people are unable to space or limit their births effectively. By providing good-quality family planning information and services, programs have helped people have the smaller families they prefer, fertility has fallen, and population growth has slowed (27, 165, 207). There is no way to predict how large the population could become before it overwhelmed the planet (96), but few people would want to find out the hard way. At current levels of population and technology, human activities are already causing "rapid, novel, and substantial changes" to the environment, biologists Peter Vitousek and colleagues argue. Two basic ways of easing humanity's impact on the environment, they note, are to use resources more efficiently and to slow population growth (252).
Two basic ways of easing humanity's impact on the environment are to use resources more efficiently and to slow population growth.
Preserving the Environment
Today, 31 countries face water stress or water scarcity. By 2025 population growth alone is expected to add another 17 countries to the list. Water shortages would then affect 2.8 billion people, or 35% of the world's projected population compared with 8% today (75). Most countries could avoid a crisis, if they could conserve and manage water supplies and demand better, while slowing the growth in demand for freshwater by slowing population growth (97).
In countries with rapid population growth and few natural resources, hunger and malnutrition often are serious and growing problems. Each year about 18 million people, mostly children, die from starvation, malnutrition, and related causes. Worldwide, an estimated 2 billion people, disproportionately women and girls, suffer from malnutrition and dietary deficiencies (63, 95, 96). Today, in some countries farmers already are cultivating areas that are dry, hilly, or rocky or that have thin, weak soils (96). Demanding too much from the soil causes it to lose nutrients and to erode (46, 153, 230), so that its food-producing capacity decreases. Slowing population growth would buy time to develop and introduce new agricultural technologies (84). It also would allow countries to adopt better land-management and conservation measures that would protect the environment. With a stable population and sustainable agricultural practices, the world might be able to feed itself on a healthy diet for centuries to come (96).
In much of the world polluted water, improper waste disposal, and poor water management cause serious public health problems. Such water-related diseases as malaria, cholera, typhoid, and schistosomiasis harm millions of people every year. Some 60% of all infant mortality is linked to infectious and parasitic diseases, most of them water-related (97). Providing clean air and water and ensuring proper sanitation would save millions of lives.
Rapid population growth in rural areas forces each generation to subdivide family agricultural plots into smaller and smaller parcels and to expand farming to increasingly marginal lands, eventually making many farmers landless (167). In time, pressures on agricultural land can become so great that many rural families cannot support themselves by farming. Many move to the city in search of jobs. Urban populations are growing so fast, that city governments often cannot provide decent housing and services for many residents (105). In the 1980s, for example, almost three of every four households established in urban areas of developing countries were in slums (129). Rising population densities also harm city dwellers by damaging their environment (3, 31, 63, 183, 206). Many cities face chronic air and water pollution problems, often reaching dangerous levels that cause many illnesses. While slowing population growth alone cannot solve the problems of urban areas, it would buy time for cities to provide more housing, jobs, and services.
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