ABSTRACT

In 1987, world population will pass five billion. It is growing at the rate of approximately a billion people every 12 years. Every minute it grows by 150; every day by 220,000; every year by over 80 million. Ninety percent of this growth is in developing countries …. Is reaching 5,000 million a triumph for humanity or a threat to its future? (Salas, 1987 ).