Air pollution is a global public health threat, responsible for more deaths annually than conventional lifestyle risk factors. While the link between particulate pollution and cardiovascular disease is well-established, evidence for gaseous pollutants remains limited. This study estimates the...

The Middle East and North Africa (MENA) countries are among the world's top emitters of CO2 and SO2 in per capita terms. The objective of this paper is to analyze whether investing in the democratic development of these countries is an effective tool to make the economic growth in this region...

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 article extends the recent findings of Liu (2005), Ang (2007), Apergis et al. (2009) and Payne (2010) by implementing recent bootstrap panel unit root tests and cointegration techniques to investigate the relationship between carbon dioxide emissions, energy consumption, and real GDP for 12...

This article extends the recent findings of Liu (2005), Ang (2007), Apergis et al. (2009) and Payne (2010) by implementing recent bootstrap panel unit root tests and cointegration techniques to investigate the relationship between carbon dioxide emissions, energy consumption, and real GDP for 12...

The Environmental Kuznets Curve (EKC) hypothesis advances an inverted U-shaped relationship between economic growth and environmental pollution. Scholars have estimated turning point incomes for various pollutants within and across countries. However, the majority of these studies were conducted...

An inverted-U relationship between GDP per capita and three urban transport-related emissions is tested (using data from 84 cities). Per capita urban transport-related emissions of CO, VHC, and NOx increase and then decline at observed income levels — a result driven by a similar inverted-U...