Human Population Growth

Population growth is becoming a big problem in today's world. The population is rapidly increasing. That is a problem because it affects the economic, environmental and social aspects of our world. In the movie "Frontline: Heat" our planet may not have a future unless we reduce emissions and make the world a safe place. In order to be able to live a long and healthy life not only for present but also for future generations.

Demographics is to intentionally manage population growth rate. Historically, population planning has been implemented to increase the population growth rate. However, from the 1950s to the 1980s, efforts were made to lower the population growth rate due to concerns about the world's population growth and its impact on poverty, environmental deterioration, and political stability. Recently, in some countries such as Iran and Spain, we are working hard again to raise the birthrate.

One of the most difficult uses of population growth research is prediction of population growth. It is estimated that the population will exceed 6 billion in 1999, reaching 9 billion by 2050. Amazing thing is that the history of mankind has reached 1 billion people - perhaps around 1800 - in the history of humanity, then doubled to 2 million people in over 100 years, only 40 years passed. Triple, reaching 6 billion! Advances in agriculture, science and medicine have contributed to the growth of recent explosive growth (thinking index!). And it allowed more people to survive and have a longer lifetime (Figure 8).

In 1798 Thomas Malthus's "Papers on the Principle of Population Increase" raised the idea that the population could experience constraints of growth and caused more than 200 years of debate. Today there is no answer to the issue of population growth limitation. Does the same factor as starting to limit the growth of more developed countries in the world, such as the declining birthrate, will delay the world's population growth? Or will growth continue to grow exponentially? If rapid growth continues, will the population ultimately come close to the capacity of the planet and will be constrained by the intensification of disease and resource competition? Scientists continue to study the processes of population growth and demographics to gain insight into these important issues