The reason why so many tree species can coexist in species-rich forests has long been a subject of debate in ecology. This question is key to understanding the mechanisms governing the dynamics and ...

The growth of large cities is often attributed to their proximity to exogenous, first-nature advantages. This column uses data on 450 Japanese cities to show that in fact, the regularity of ...

A spatial analysis of crime in Chicago suggests that certain environmental and socioeconomic factors, such as building density, are linked with crime rates, but these relationships differ between ...