Climate Action Could Prevent 13.5 Million Air Pollution Deaths by 2050: Global Study

A new study published in The Lancet Global Health reveals that strong climate action aimed at limiting global warming to 2°C could prevent more than 13.5 million premature deaths caused by air pollution by 2050—primarily in low- and middle-income countries (LMICs).

The research, led by experts including those from The University of Texas at Austin, highlights that the scale and distribution of health benefits depend significantly on how global climate mitigation efforts are shared among nations.

According to the findings, a “least-cost” approach—where emissions are reduced wherever it is cheapest—places a heavier burden on LMICs. However, this model also delivers the greatest improvements in air quality in those regions, resulting in the highest number of lives saved.

In contrast, an “equity-based” approach, where wealthier nations take on a larger share of emissions reduction, eases the financial burden on developing countries. But this could lead to nearly four million fewer lives saved, as emissions cuts may not occur in the most pollution-affected regions.

Co-author Mark Budolfson noted a critical dilemma between climate justice and maximizing health outcomes, explaining that shifting mitigation responsibility to richer nations may unintentionally reduce life-saving air quality improvements in poorer countries.

The study also evaluated a third scenario that combines equity with targeted air pollution controls in LMICs—such as reducing soot and sulphur dioxide emissions through advanced technologies in industries like power generation. This approach emerged as the most effective, balancing fairness with maximum health benefits.

Another co-author, Noah Scovronick of Emory University, stressed the importance of designing climate policies that prioritize both justice and public health. He emphasized that developing nations must not miss the opportunity to achieve significant reductions in air pollution while transitioning to cleaner systems.

The study underscores the need for global cooperation to craft climate strategies that are both equitable and life-saving.

Source: PTI