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Chapter 6 Human Overpoulation
What's the Problem Earth�s huge human population has a colossal influence on animal rights. Human overpopulation destroys wildlife and imposes suffering on animals. Sources say that as the human population grows, three or more species go extinct every hour. In 1798 the Englishman Thomas Malthus published An Essay On The Principle Of Population voicing apprehension about human population growth. He pointed out that the human population grows more quickly than can be matched by food production and was already overtaking its food supply. He predicted environmental degradation leading to massive famine, disease and war. Malthus was writing in response to the optimism of the Enlightenment that humanity can tame the environment and that human potential was limitless. The disaster Malthus anticipated did not happen, agricultural and industrial revolutions saw to that. But the spectre of Malthus has not gone away. His warning seems even more applicable today and on a worldwide scale. The global human population as it grows is ever increasing its use of resources. Even the most fundamental resources like water, land and air are in short supply and being polluted. Estimates are that humans already use over half the world's accessible fresh surface water and have changed or degraded up to half of Earth's land surface through agriculture and urban building. By 2030 there could be one billion cars - 100 million of them in China alone - choking Earth's atmosphere and considerably contributing to global warming. The Overflowing Human Population The human population reached 0.3 billion in year 0 (two thousand years ago). Then it took 1,800 years to reach its first billion. But from there on the pace of human population growth burst its barriers and in the last few decades a billion more people are added to the population every few years - see Table 1. Landmarks In Human Population Growth Worldwide.
At the present rate of human increase, three babies are added to Earth every second, making a quarter of a million more people each day or 80 million more people annually. Over half (about 60 per cent) of humanity lives in just ten countries - see Table 2. Top Ten Human Populations by Country.
Social Affairs. United Nations. Human numbers at the current rate of expansion might reach 300 billion in another 15 decades. However, Earth's resources cannot sustain anything near this number of people and humanity would die off before achieving this mass. Wars for diminishing resources, breakdown of societies followed by disease and starvation would consume humanity first. Fortunately, for some of the world's people, influences like family planning, modern contraception, education and prosperity create a desire to bear fewer children. Consequently, population growth is slowing to some extent. Overpopulation & Animals A massive human population goes against animals gaining rights. Billions of more humans mean people kill billions of more animals (livestock and wild). As the human population expands, worldwide meat consumption has increased three and a half times in the last four decades: from about 70 million tonnes to nearly 250 million tonnes a year. Ever more people will deplete resources that wildlife need. Water is becoming increasingly scarce in more parts of the world as people channel it off for agriculture, industry, leisure and domestic use. Forests are logged to make anything from pencils to buildings and the animals in the forests are turned out and die. Growing cereals denies the use of the land to animals, and the animals themselves may be killed if they eat the crops or trample them. The worldwide consumption of cereals will increase by 66 per cent and consumption of forest products by 120 per cent from 2000 to 2050 (Living Planet Report 2002, WWF). Click to go to silhouettes. ›› To Entries & Home |