Why is the burden of carbon emissions concentrated in low-income countries? Global warming and climate change have transcended a mere environmental crisis to become a central agenda across global economics, politics, and society. While international climate policies established to address these global challenges have made significant progress, they still reveal fundamental limitations in terms of equity and efficiency. A key issue threatening the sustainability of international cooperation is the disproportionately large burden borne by low-income countries, which historically bear less responsibility for carbon emissions, in the costs of climate mitigation. A study titled 'How to make climate policy fair and efficient across countries,' published by VoxDev on April 10, 2026, deeply analyzes this structure of international inequality with data-driven insights. The researchers point out that current carbon policies do not adequately consider the economic conditions and historical responsibilities of different countries, leading low- and middle-income countries to endure excessive economic sacrifices. Concurrently, the 'Economic policy' report released by the OECD on April 9 emphasizes the significant impact of climate change's physical risks on public finance, investment, inflation, international trade, and overall economic growth, underscoring the urgency of establishing effective climate adaptation strategies. The imbalance in the burden of carbon emissions is the most contentious factor in international climate policy. According to the VoxDev study, low-income countries, despite historically contributing minimally to global carbon emissions, disproportionately bear the economic costs of currently implemented carbon reduction policies. The study warns that if carbon pricing policies are applied uniformly to all countries, the economic growth of low-income countries could be severely hampered, and poverty reduction efforts could regress. For example, sub-Saharan African countries, whose per capita carbon emissions are only one-tenth that of developed nations, face a much higher proportion of infrastructure investment burdens for climate change adaptation relative to their GDP. Specifically, the decline in agricultural productivity due to climate change is a particularly severe problem in the African region. According to a recent World Bank report, climate change risks pushing an additional 100 million people into extreme poverty in sub-Saharan Africa by 2030. The increasing frequency of extreme weather events like droughts and floods threatens the food security and economic stability of low-income countries with agriculture-centric economies. However, the financial support these countries need for climate adaptation is woefully insufficient. Developed countries' delays in fulfilling their climate finance commitments further exacerbate this inequality. At the 2009 Copenhagen Climate Conference, developed nations pledged to provide $100 billion annually in climate finance to developing countries by 2020. However, according to OECD figures, the actual climate finance mobilized in 2020 was approximately $83.3 billion, falling short of the target. Moreover, a significant portion of the provided finance came in the form of loans rather than grants, drawing criticism for increasing the debt burden of low-income countries. Climate-vulnerable nations like Bangladesh suffer immense economic losses annually due to rising sea levels and cyclones, yet the promised international aid falls far short of their needs. The VoxDev study proposes the necessity of a differentiated carbon pricing system across countries to address these issues. The researchers emphasize that tailored policy design, considering each country's level of economic development, historical emission responsibility, and carbon reduction capacity, is essential. For instance, they suggest a mechanism where developed countries are charged higher carbon prices, and a portion of these revenues is transferred to developing countries for clean energy transition and climate adaptation projects. This is a practical approach that can improve international equity while maintaining economic efficiency. The study analyzes that such a differentiated approach could also be more effective in achieving global carbon reduction targets. The OECD report provides a detailed analysis of the multi-layered macroeconomic impacts of climate change's physical risks. Extreme weather events are not merely one-off disasters but inflict continuous and cumulative damage across the entire economic structure. According to the report, climate-related natural disasters destroy infrastructure and reduce productivity, which in the long term lowers potential growth rates. Specifically, coastal flooding, reduced agricultural production due to drought, and decreased labor productivity from extreme heat combine to negatively impact the overall economy. Global Cooperation and South Korea's Role In
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