In our existence for the last 52,000 years on this planet Earth, there have been a total of about 106.billion people. Every year we add almost 78 million people to the world population and are rapidly consuming its resources.

In the year 1 AD we were only 300 million and our population was growing slowly at 0.5% per year. At the start of 1980 the world population was 4.4 billion but in 20 years we added over 1.6 billion people and the population was 6 billion. By 2015 it is predicted we will be more than 7 billion. A British Physicist estimated this alarming rise and predicted our current growth as follows-

'At the current rate it would take only about 50 years to populate Venus, Mercury, Mars, the moon, and the moons of Jupiter and Saturn to same population density as Earth. . . It would take only about 200 years to fill [the remaining planets] "Earth-full." . . . What then? .'   - J. H. Fremlin