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The Demography of the World Population from 1950 to 2100. Data source: United Nations — World Population Prospects 2017. Demography (from Ancient Greek δῆμος (dêmos) 'people, society' and -γραφία (-graphía) 'writing, drawing, description') [1] is the statistical study of human populations: their size, composition (e.g., ethnic group, age), and how they change through the ...
Demographic economics or population economics is the application of economic analysis to demography, the study of human populations, including size, growth, density, distribution, and vital statistics.
Netherlands: 3 entities; New Zealand: 3 entities; Norway: 3 entities; United Kingdom: 17 entities; United States: 14 entities; Miscellaneous Antarctica and places in dispute. There are six such entities. Other entities The World and the oceans. There are five oceans and the World (the World entry is intended as a summary of the other entries). [4]
[3] [failed verification] The aged population is currently at its highest level in human history. [4] The UN predicts the rate of population ageing in the 21st century will exceed that of the previous century. [4] The number of people aged 60 years and over has tripled since 1950 and reached 600 million in 2000 and surpassed 700 million in 2006.
As of 2009, the average birth rate (unclear whether this is the weighted average rate per country [with each country getting a weight of 1], or the unweighted average of the entire world population) for the whole world is 19.95 per year per 1000 total population, a 0.48% decline from 2003's world birth rate of 20.43 per 1000 total population.
The Birder's Handbook: A field Guide to the Natural History of North American Birds (1988, with David S. Dobkin and Darryl Wheye) New World, New Mind: Moving Towards Conscious Evolution (1988, co-authored with Robert E. Ornstein) [65] The Population Explosion (1990, with Anne Ehrlich)
Human population projections are attempts to extrapolate how human populations will change in the future. [2] These projections are an important input to forecasts of the population's impact on this planet and humanity's future well-being. [3] Models of population growth take trends in human development and apply projections into the future. [4]
Population: Facts and Methods of Demography (with Wilhelm Flieger, W.H. Freeman and Company, 1971) Applied Mathematical Demography (Springer-Verlag, 1977) Population Change and Social Policy (Abt Books, 1982) World Population Growth and Aging: Demographic Trends in the Late Twentieth Century (with Wilhelm Flieger, Univ. of Chicago Press, 1990)