By David Skillman Click here to take ENN's population quiz. The world according to Malthus has its disbelievers. Critics of his assumptions point out that, though the world's population is increasing, the rate of population growth is slowing, despite a declining infant mortality rate and an increasing average life span.
Some contemporary theorists hold that there is no population problem.
In the 19th century the Earth could sustain only 1 billion. And 10,000 years ago, only 1 million people could keep themselves alive. People are living more healthily than ever before, too. The issue of world population has many points of view and few certainties. Click here to take ENN's population quiz.