Keys to making urban growth boundaries work as a planning tool for controlling sprawl in US cities were identified in a session in the recent American Planning Association conference. Examples of urban growth boundaries were presented from Portland, Oregon; King County, Washington; and Denver. Messages were that the boundaries are flexible and negotiable; they succed…

UN-Habitat has launched a new open-access portal for urban data. Urban Data allows users to explore data from a number of cities and regions around the world and compare indicators such as slum prevalence and city prosperity. you can try it out for yourself here.

Informal development is now penetrating the formerly exclusive suburbs of Harare, Zimbabwe’s main city. lLike many colonial cities the early planning of Harare sought to segregate areas by class and ethnicity. However, urbanisation and poverty are now resulting in green spaces in low density suburbs becoming the focus for informal housing that brings the poor…