Densifying existing settlements while containing urban sprawl—this idea has spread far beyond urban planning circles and is now recognized as a key principle of urban development. Ultimately, dense and compact cities can contribute to several environmental, economic, and social benefits: less urban sprawl, protection of undeveloped land, shorter transport routes, lower greenhouse gas emissions, the creation and cultivation of diverse neighborhoods, and access to more social and cultural amenities.
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Source: Phys.org