Modern scientific and technological achievements have created advanced medicine, extended human life and reduced newborn infant mortality. Coupled with the long period of peace after World War II, some countries adopted family planning policies very late, which has resulted in a stable reproductive era for mankind. The world's population is growing rapidly and is expected to reach 6.4 billion by the end of the current world Economy.
The main argument supported is that the stable fertility period caused by a combination of many factors led to a large increase in population.