Building greener cities: nine benefits of urban trees

[noura]

For the first time in history, more than 50 percent of the world’s population now lives in towns and cities. By 2050, this number is expected to increase to 66 percent. The shift from rural to urban areas, mainly in Africa and Asia, is due to poverty and related socio-economic factors. For the most part, the rapid expansion of cities [...]

أكثر... (http://www.fao.org/zhc/detail-events/en/c/454543/)