A new bridge in Portland, Oregon carries pedestrians, cyclists, buses, trams and light rail metro – but no cars or trucks. The Tilikum Crossing over the Willamette River opened on 12 September 2015. Perhaps not surprisingly, it is in Portland, Oregon, one of the most environmentally conscious cities in the USA. In connecting and extending the public…

Faced with increased urban flooding, China is seeking to create “sponge cities” that can absorb water. China’s rapid urbanisation has been accompanied by increased rates of urban flooding. The number of Chinese cities affected by floods has more than doubled since 2008. While water management was integrated into traditional Chinese urban development, the last 40 years have…

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…

A project that has resettled slum dwellers and given them security of tenure is being hailed as a model to be followed in the Indian sub-continent. The number of slum dwellers in Bangldesh has been increasing sharply over the past 20 years. The urban slum population is 60%, a higher figure than for India or Pakistan.…