A city is a huge group of people living together. It is a permanent and densely inhabited area with officially defined limits, whose residents largely work on non-agricultural jobs. Housing, transportation, sanitation, utilities, land usage, products manufacturing, and communication networks are all common in cities.
Their density increases contact between individuals, government agencies, and enterprises, which benefits several stakeholders in the process, such as boosting the efficiency of products and service delivery. Dense cities have the potential to have a smaller ecological footprint per inhabitant than more sparsely populated locations due to transportation efficiency and land utilization.
As a result, compact cities are frequently referred to as a critical component in the battle against climate change. This concentration, on the other hand, can have serious negative repercussions, such as the formation of urban heat islands, the concentration of pollutants, and the strain of water supplies and other resources.
Historically, city inhabitants have made up a tiny percentage of humankind, but after two centuries of extraordinary and fast urbanization, cities today house more than half of the world’s population, with important implications for global sustainability. Today’s cities are often in the heart of bigger metropolitan regions and urban regions, attracting a huge number of commuters seeking jobs, leisure, and education.
However, in an age of increasing globalisation, all cities are connected worldwide to varied degrees beyond these zones. Cities now have a huge impact on global concerns such as sustainable development, global warming, and global health as a result of their rising importance. As a result of these significant impacts on global challenges, the international community has emphasized investment in sustainable cities as part of Sustainable Development Goal 11.
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