The spire collapses while flames are burning the roof of the Notre-Dame Cathedral in Paris, France. Ian Langsdon/EPA

Architecture

Notre Dame: how a rebuilt cathedral could be just as wonderful

With modern technology, it is entirely possible for the cathedral to be recreated with near-accuracy to the original. We can do this and keep the original building's spirit and feeling.
A safe, connected network of bike lanes and paths encourages cycling. (Shutterstock)

Cycling

Better city bike maps are made by volunteers

Volunteers can contribute data to maps that help cyclists choose their routes and let planners know how city cycling can be improved.
The Korle Gono beach in Accra covered in plastic bottles and other items washed ashore following weeks of heavy flooding in 2016. EPA/Christian Thompson

Infrastructure

How everyday politics shapes the way African cities are run

Focusing on everyday politics can help explain why powerful interest groups undermine policies that might improve the public good.

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Events

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