New WRI research shows that cities in sub-Saharan Africa and South Asia are expanding outward rather than vertically. As these places grow in population, continuing their unwieldy expansion outward could push them into economic, environmental and social crises.
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.
The upcoming March for Science is an opportunity to push for evidence-based solutions. But real change comes not from placard-waving, but from the tireless, low-profile actions we each take every day at work, in town hall meetings and in our homes.
Making transport sustainable for all city residents is a prominent part of the New Urban Agenda, the outcome document of the Habitat III conference. Making that vision a reality presents challenges to city leaders who struggle to address the immediate need to move people from homes to jobs with limited resources.