Lasers revealed that the city spanned roughly the same area as Beijing and may have been among the most densely populated in the region.

Encompassing about 47 square miles (122 square kilometers), the LiDAR scans were collected in 2013 for a forest survey by The ...

Mexico City is a sprawling metropolis that can ... On Sundays the "forest" (really a park) is crowded with picnicking families and large crowds heading to the area's many museums.