Fueled by the province’s booming energy sector, Alberta’s two largest cities have experienced unprecedented levels of growth. As a result, they face a choice about how to best accommodate their expanding populations — whether to grow out or grow up. For decades, Calgary and Edmonton...

New research by Henry Overman and colleagues provides a detailed picture of how land is used in US cities - and challenges conventional wisdom about urban sprawl.

We study the extent to which US urban development is sprawling and consider what determines differences in sprawl across space. Using remote-sensing data to track the evolution of land use on a grid of 8.7 billion 30x30 metre cells, we measure sprawl as the amount of undeveloped land surrounding...

We study the extent to which U. S. urban development is sprawling and what determines differences in sprawl across space. Using remote-sensing data to track the evolution of land use on a grid of 8.7 billion 30 × 30 meter cells, we measure sprawl as the amount of undeveloped land surrounding an...