In major cities around the world, dockless scooters and bikes are everywhere, yet the companies themselves are often breathtakingly short-lived. Basic economic concepts give us clues why.
As more people of color move to the suburbs, they might not find the full range of opportunities that white European ethnic groups did for most of the previous century.
In the rush to become 'open defecation free', cities are taking quick fixes that are making matters worse.
Hundreds of Canadian municipalities have declared climate emergencies but many have yet to take action.
From Santiago and La Paz to Beirut and Jakarta, many of the cities now gripped by protest share a common problem: They've grown too much, too fast.
Berlin's rapid transformation is proof that cities can overcome conflict – but the fight against injustice doesn't end there.
When mapping deprivation, using traditional boundaries can distort the data and distract readers from important information.
A whole range of social and technological changes could revolutionise how we travel in the coming decades.
Most of the world's urban residents now live in suburban areas. A multi-year, multi-site project has conducted research internationally about these changing urban areas.
The more people come to a city, the bigger demand for buildings. These buildings need to be safe.
Half the world's urban population live in cities with 500,000 inhabitants or fewer – it's time to celebrate these 'ordinary' cities.
A study looked at fines in 93 California cities. Cities with more black residents and more disproportionately white police forces tended to rely the most on fines.
Planes, trains and automobiles produced a step-change in the speed of travel – driverless and electric cars simply cannot deliver such radical improvements.
In South Africa and India, research has found that free or affordable housing can actually undermine women's safety and livelihoods.
Cities represent an increasingly powerful force in global politics – but they're still constrained by the agendas of slow-acting states.
According to a new smart cities index, the real test for smart cities is whether citizens feel the benefits.
From happier and healthier residents to more resilient buildings – green roofs offer significant benefits to cities.
Investigation of the brains of children and young adults who died suddenly in Mexico City revealed amyloid plaques similar to those found in the brains of people with Alzheimer's disease.
The number of older renters is growing – and much less is known about their experiences in the expensive and insecure private rented sector.
The 'superblocks' are expected to have massive benefits for health and well-being – but it takes good governance.