Some cities establish Green Zones to prioritize the health of communities historically overburdened by pollution [5.8, 5.25, 5.29]. These programs implement land-use tools to reduce local pollution and advance sustainable neighborhood development [5.8, 5.30].
In environmental science, the Green Zone refers to the "safe operating space" for humanity within global ecological limits [5.35]. Zone Green Text Amendment - NYC.gov
In urban planning, Green Zones (or areas) are public spaces with vegetation, such as parks, used for recreation and to improve community well-being [5.17, 5.23, 5.34].
Recent U.S. military planning documents have described a proposed "Green Zone" in Gaza [21, 5.24, 5.40]. This area would be under Israeli and international military control, serving as a model for postwar reconstruction and providing housing, schools, and hospitals [21, 5.40].