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Between 1985 and 2011 rising income inequality led to a tighter coupling between economic growth and CO2 emissions in developed nations.

CO2 emissions from natural gas sources do not displace CO2 emissions from coal. These results cast doubt on whether the growing use of natural gas is likely to help substantially reduce CO2 emissions.

Core nations have an attenuated relationship between GDP per capita and emissions per capita at higher levels of economic activity, while those in the semiperiphery have a relationship that approximates the curve of a U. The majority of variation in emissions is correlated with time-invariant variables, not with time-variant predictors, such as GDP.

While urbanization is associated with increases in CIWB, the relationship between urban development and CIWB is vastly different in developed nations without slums than in under-developed nations with slums.

Water utility privatization in the United States follows the logic of a variegated neoliberalism and constitutes a form of environmental injustice.

In areas of the southern United States, rural growth was associated with afforestation, not deforestation. We speculate on how this unusual finding contributes to the debate between ecological modernization and urban political economy.