Environmental quality and climate change have long attracted attention in policy debates. Recently, air quality has emerged on the policy agenda. We calculate a new index of air quality using CO2 and SO2 emissions per capita as indicators and provide a ranking for 122 countries from 1985 to...

This paper provides an empirical assessment of the impact of the main driving forces underling CO2 and SO2 emissions across political regimes. Depending on the air pollutant and the political regime, the relationship between per capita GDP and emissions levels is either linear or inverted-U...