What Three Decades of Advancing Clean Air Taught Us—and Where We Go from Here

In 1990, facing a public health crisis, Mexico City initiated its first multiyear air quality management strategy, significantly reducing lead and sulfur emissions. These results

This new dataset tracks urban emissions from space

Cities worldwide can now track their carbon and methane emissions from space, thanks to a new dataset from the World Bank that puts high-resolution, real-time

Hacking the heat: How data innovations can help cities face a rising threat

In Paris, authorities closed more than 1,000 schools — and the summit of the Eiffel Tower — during last month’s heatwave. In Eastern China, the power grid