Or Paradox Regained? The answer is Paradox Regained. New data confirm that for countries worldwide long-term trends in happiness and real GDP per capita are not significantly positively related. The principal reason that Paradox critics reach a different conclusion, aside from problems of data...

The environmental Kuznets curve is a relationship between various indicators of environmental degradation and income per capita. Empirical studies have produced mixed results concerning Environmental Kuznets Curve hypothesis given the different indicators of environmental degradation used. But...