New environmental performance index highlights sustainability gains, and the challenges ahead
Yet, the new assessment finds that few countries are on track to meet the global goal of net-zero greenhouse gas emissions by 2050 and that progress has slowed across a range of pollution control and natural resource management challenges.

Yet, the new assessment finds that few countries are on track to meet the global goal of net-zero greenhouse gas emissions by 2050 and that progress has slowed across a range of pollution control and natural resource management challenges.
The short version
- This article has been reviewed according to Science X's editorial process and policies .
- Editors have highlighted the following attributes while ensuring the content's credibility: The report also shows how advances in artificial intelligence are giving researchers a clearer picture of environmental change around the world.
- Estonia ranks first in the 2026 EPI, driven in large part by a sharp reduction in greenhouse gas emissions from power generation over the past decade.
What happened
The country has ramped up renewable electricity and scaled back fossil fuel production while also ranking among the world's top performers on biodiversity and ecosystem protection. European countries hold all but one of the top 20 positions in this year's ranking, reflecting strong performance on environmental health and climate change mitigation.
Why it matters
After Estonia, the top five are Luxembourg, the United Kingdom, Finland and the Netherlands.
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