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Rue des Tournelles, Paris, November 5, 2019. Four Voi scooters wait hopefully for potential clients, with a Lime and Dott sprawling nearby. Behind them, a Velib’ rider has made his choice. Leighton Kille/The Conversation France

E-scooters, bikes and urban mobility: lessons from the streets of Paris

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.
Chilean police clash with anti-government demonstrators during a protest in Santiago, Chile, Nov. 12, 2019. Santiago is one of a dozen cities worldwide to see mass unrest in recent months. AP Photo/Esteban Felix

Urban unrest propels global wave of protests

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.
Three very different maps, using the same deprivation data, for the same place: Hartlepool, UK. Samuel Langton/MMU, using OS Data © Crown copyright 2019.

Even the most beautiful maps can be misleading

When mapping deprivation, using traditional boundaries can distort the data and distract readers from important information.
The Kayasehir suburb of Istanbul, Turkey. Cities throughout the world have differing approaches to development at their edges. Roger Keil

Suburban change is transforming city life around the world

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.
Severe air pollution can speed up neurodegeneration when the brain is at the peak of its development — during childhood. Pictured here, a child in Beijing. (Shutterstock)

Air pollution in global megacities linked to children’s cognitive decline, Alzheimer’s and death

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.

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