Unequal transitions: Social progress and decarbonization contradictions across 160 countries

Area of Science:

• Environmental Science and Policy
• Sustainable Development
• Socio-economic Analysis

Background:

• Mitigating climate change via CO₂ emissions reduction must align with sustainable and equitable social progress.
• The intricate interlinkages between emissions and social progress are insufficiently understood globally.
• Existing research often overlooks structural inconsistencies by relying on aggregate correlation analyses.

Purpose of the Study:

• To diagnose structural inconsistencies between CO₂ emissions and social progress across different income levels.
• To move beyond simple correlations by disaggregating social progress indicators (SPIs) and examining their relationships with emissions.
• To identify patterns of alignment and contradiction to inform differentiated climate policies.

Main Methods:

• A multi-method diagnostic approach analyzing total CO₂ emissions and 55 SPIs across 160 countries (2011-2023).
• Application of Spearman correlation, Theil-Sen bootstrapping, and hierarchical clustering to identify trajectory patterns.
• Disaggregation of SPI categories to reveal nuanced relationships often masked in aggregate models.

Main Results:

• High-income countries show a higher proportion of positive correlations (29%), indicating alignment between decarbonization and social improvements (e.g., health, education).
• However, contradictions persist in high-income nations regarding equity, freedoms, and access to quality services.
• Lower-middle and low-income countries exhibit more negative correlations (46% and 38%), suggesting social progress often coincides with rising emissions.

Conclusions:

• Weak correlations in many high-income nations suggest policy and economic transitions mediate emission-social progress relationships.
• The findings underscore the need for justice-oriented climate policies that reduce emissions without exacerbating inequality, especially in lower-income contexts.
• Joint pursuit of environmental and social objectives requires differentiated national and global strategies.