Our future depends on choices - on the choices we have made in the past and those we will make in the future. We cannot continue the exceptional growth of this last half century without experiencing consequences.It is assumed that fertility rates will carry on dropping and preventions and treatments against HIV and AIDS will be more effective in time to come. Also, catastrophes like biological warfare or thermonuclear holocaust is unlikely to be inflicted on people. This assumption is based on the urbanization predictions of the United Nations Population Division.History of human population: Since the beginning of time till 1927, the earth ended up with first 2 billion people on the planet. It took another 50 years to add the next 2 billion people (1974). Also, another 25 years later, the earth witnessed the next 2 billion added (1999).Birth rates: The global total fertility rate declined from 5 children per woman per lifetime (1950) to 2.7 children (2000). This is thought to be the result of worldwide efforts to make contraception and reproductive health services available widely. However, if the current fertility rate remains as it is, the world population can be expected to grow to 12.8 billion by 2050 as opposed to the projected 8.Urbanization: Approximately 2 percent of people lived in cities in 1800, followed by 12 % in 1900, followed by more than 47 % in the year 2000. In 1900, there was not a single metropolitan region that exceeded 10 million people. By 1950, New York became the first region to exceed 10 million people. By the year 2000, there were 19 urban regions that had 10 million or more people. Out of the 19 regions, just four were (Tokyo, Osaka, New York, and Los Angeles) were in industrialized countries.It may not be easy to predict whether global demographics will affect families or international migration. However, there are three factors that do help to point out where growing population is going. These are: fertility falling to very low levels, increasing longevity, and changing mores of marriage, cohabitation and divorce. The following scenario is quite interesting keeping in mind these three pointers.A population that has one child per family means that there will not be any siblings for that one child. Therefore, in the next generation, the children of those single children will have no cousins, aunts, or uncles.If a population has people
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