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Climate change is widening the environmental performance gap between Europe and the United States, according to the latest Environmental Performance Index (EPI) 2026, which found that European countries dominate the global rankings while the US has slipped to 27th place. The index, developed by researchers at Yale University and Columbia University, assessed 177 countries across climate change, biodiversity, pollution and ecosystem health. Researchers say Europe’s stronger climate policies and faster emissions cuts have helped it pull ahead, while the US continues to lag on long-term climate action despite improvements in some environmental indicators.
European countries dominate the global environmental rankings
According to the latest index, Estonia ranked first in overall environmental performance, followed by Luxembourg and the United Kingdom. European nations occupied 17 of the top 20 positions, with Japan the only non-European country to feature in the top 20, ranking 16th.
The rankings reflect improvements in air quality, sanitation, wastewater treatment and biodiversity protection across much of Europe. Researchers also credited many European countries for reducing greenhouse gas emissions while expanding renewable energy and strengthening environmental regulations.
By contrast, the United States dropped to 27th place, with the report finding that its pace of emissions reductions remains insufficient to achieve its long-term climate targets. Although the country has made progress in reducing certain forms of pollution, researchers say inconsistent climate policies continue to limit its overall environmental performance.
Climate action remains the biggest challenge
While many countries have improved on traditional environmental indicators, the report says climate change remains the weakest area globally. Researchers found that most nations are not reducing emissions quickly enough to keep global warming within internationally agreed limits.
The assessment notes that several European countries have accelerated their transition towards cleaner energy, helping improve their climate scores. However, even many high-ranking countries continue to face challenges such as biodiversity loss, intensive agriculture and pressure on natural ecosystems.
The report also highlighted mixed progress among the world’s largest economies. China ranked 129th, with researchers pointing to its continued dependence on coal, which still accounts for around 56% of the country’s electricity generation. At the same time, they acknowledged China’s rapid expansion of renewable energy and improvements in urban air quality.
Developing countries continue to face resource constraints
Many lower-income countries ranked near the bottom of the index, including India, Bangladesh and Laos. Researchers say these rankings often reflect limited financial resources, institutional capacity and infrastructure rather than a lack of environmental ambition.
The report emphasises that reducing air and water pollution has become increasingly achievable through existing technologies and policies. However, achieving deep emissions cuts needed to limit climate change will require much broader changes in energy systems, transport, industry and land use.
Researchers say the findings highlight a widening divide in global climate action. While several European countries continue to strengthen environmental policies and reduce emissions, many other nations remain off track to meet their climate goals. The authors argue that stronger international cooperation, greater investment and faster policy implementation will be essential if countries are to close the gap between current progress and the action needed to address the climate crisis.
References:
https://epi.yale.edu/downloads/epi2026pmsum2026-07-06.pdf
https://www.theguardian.com/environment/2026/jul/08/climate-change-crisis-europe-us
Banner image: Photo by Gustavo Quepóns on Unsplash
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