Free trade agreements (FTAs) have a key role in the global value chain. In the meantime, these are also disturbing the environmental balance of the world. The objective of this study is to check whether the trade is good or bad for the environments of countries that are bonded by trade agreements. This study examines the impact of FTAs on bilateral carbon emissions within the gravity framework. We find a positive impact of FTA agreements on bilateral CO₂ pollution. However, in an income-based country group analysis, we find mixed evidence regarding FTAs. The analysis concerning high income countries indicates that free trade agreements are beneficial for high income countries, while, in the case of upper middle income and lower middle income countries, we find that the free trade agreements are not beneficial for their environments. These results of the effects of FTAs on bilateral CO₂ pollution imply that low income countries have a greater pollution effect even after the implementation of an FTA due to lenient environmental standards. There is a need for developing countries to learn from high income countries, as their FTAs are beneficial for decreasing pollution.

Energy demand is rising day by day, driven mainly by the development of countries. At the same time, uneven economic growth in countries is the prime cause of inequality in energy consumption. Keeping in view the worth of energy in the growth process, this study quantifies the impact of energy inequalities and trade on environmental quality over the period 1995–2018 for 57 countries. The Theil approach is used to quantify inter-and intra-regional disparities in five energy sources; oil, coal, natural gas hydroelectricity, and renewable energy. The results show that North America has the highest oil consumption inequality between the regions while East Asia & Pacific has the highest index value within the regions. Coal consumption inequality is declining in North America, but not in East Asia and the Pacific. Europe & Central Asia, and North America have the highest inequalities in natural gas consumption between the regions. Inequality is shrinking in hydropower consumption between the regions, however, such trend has not loomed within the regions. Europe & Central Asia and East Asia & Pacific have major renewable consumption inequalities within the regions. Generally, there is a decreasing temporal trend in energy consumption inequalities of all energy sources. The GMM technique is applied to investigate the impact of energy inequalities and trade openness on environmental quality. The results reveal that energy inequalities degrade environmental quality. Moreover, trade has a positive impact on environmental quality. However, democratic countries can be advantageous to improve the environmental quality. The study implies that countries should take actions to reduce energy inequalities within and between the regions. Specialization in production through trade can also be an option for improvement in the environment.