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Cities are also one of the most vulnerable parts of the human society to the effects of climate change, [3] and likely one of the most important solutions for reducing the environmental impact of humans. [4] [2] [3] The UN projects that 68% of the world population will live in urban areas by 2050. [5]
Moreover, the lack of green spaces in low income, urban areas green gentrification due to these communities at present struggling with financial matters. [32] The promotion of green areas has a positive effect on the communities, and the imbalance of greenery in wealthy versus low-income areas exhibits environmental injustice.
The climate in urban areas differs from that in neighboring rural areas, as a result of urban development. Urbanization greatly changes the form of the landscape, and also produces changes in an area's air. The study of urban climate is urban climatology. In 1950 Åke Sundborg published one of the first theories on the climate of cities. [1] [2]
One-fifth of the world's population, 1.2 billion people, live in areas of water scarcity. Climate change and water-related disasters will place increasing demands on urban systems and will result in increased migration to urban areas. Cities require a very large input of freshwater and in turn have a huge impact on freshwater systems.
A glimpse on the history of green urbanism of the U.S. as found in Karlenzig's, et al. ‘How Green is Your City’ book (2007, 06–07). The concept had a gradual start in the late 1800s, when some large cities of the United States (U.S.) started using advanced drinking water, sewage and sanitary systems.
Satellite imaging of Cartí Sugtupu, Panama in 2022, showing rising sea levels submerging the island and forcing hundreds of indigenous Guna people to relocate.. This article lists several areas, regions, and municipalities that have either been completely or markedly depopulated, or are involved in plans for depopulation or relocation due to anthropogenic climate change.
Species of fish living in cold or cool water can see a reduction in population of up to 50% in the majority of U.S. freshwater streams, according to most climate change models. [102] The increase in metabolic demands due to higher water temperatures, in combination with decreasing amounts of food will be the main contributors to their decline ...
The widespread reforestation in urban sites of Paris was launched in 2020 in order to reduce air pollution in the city. Anne Hidalgo, Mayor of Paris, stated that by the summer of 2023 63,500 trees were already planted, and by end of her term 170,000 will be planted in all.