Like many other big, developing cities, South Africa's largest city struggles with spatial inequality, where good jobs and affordable housing are mismatched. To bridge the gap, they've turned to a new planning paradigm called transit-oriented development.
For the cash-strapped government of Rio de Janeiro, restoring forests around the city is a smart investment. New research shows that forests can provide Rio with better water quality at lower cost.
Cities in Brazil, India and Indonesia are using the new Urban Community Resilience Assessment tool to prepare for a warmer world.