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Urbanization over the past 500 years [12] A global map illustrating the first onset and spread of urban centres around the world, based on. [13]From the development of the earliest cities in Indus valley civilization, Mesopotamia and Egypt until the 18th century, an equilibrium existed between the vast majority of the population who were engaged in subsistence agriculture in a rural context ...
Urbanization has many environmental consequences. In all urban areas there are numerous impacts on the environment such as air pollution, water pollution, etc. Excessive urbanization creates risks (fragilization of soils, pollution, plundering of natural resources) [6] Urbanization is one of the causes of the erosion of biodiversity.
The United States Census Bureau changed its classification and definition of urban areas in 1950 and again in 1990, and caution is thus advised when comparing urban data from different time periods. [2] [3] Urbanization was fastest in the Northeastern United States, which acquired an urban majority by 1880. [2]
For the first time in human history the majority of people live in urban areas. The United Nations estimates that approximately 68% of the world's population will be living in urban areas by 2050. [3] Urbanization has vast implications including the urban planning, geography, sociology, architecture, economics, and public health of a region. [6]
New York City, one of the largest urban areas in the world. Urban geography is the subdiscipline of geography that derives from a study of cities and urban processes. Urban geographers and urbanists [1] examine various aspects of urban life and the built environment. Scholars, activists, and the public have participated in, studied, and ...
An urban area [a] is a human settlement with a high population density and an infrastructure of built environment. This is the core of a metropolitan statistical area in the United States, if it contains a population of more than 50,000. [2] Urban areas originate through urbanization, and researchers categorize them as cities, towns ...
Historic urbanization processes, such as redlining in the United States, have lasting impacts on land use and may perpetuate disparities in urban heat through unequal distribution of vegetation. [ 1 ] [ 8 ] Access to healthcare, public transportation, adequate housing, and reliable energy typically govern disparities to heat, of which many of ...
Urban renewal (also called urban regeneration in the United Kingdom and urban redevelopment in the United States [1]) is a program of land redevelopment often used to address urban decay in cities. [2] Urban renewal involves the clearing out of blighted areas in inner cities in favour of new housing, businesses, and other developments.