The biennial Yale University Environmental Performance Index (EPI) has ranked Estonia as the world's top-performing country among 177 assessed nations, driven by strong recent efforts to cut greenhouse gas emissions and protect ecosystems. Luxembourg secured second place, while the United Kingdom climbed to third, up from fifth in the 2024 index. European countries dominate the top 20, with Japan (16th) being the only non-European nation in that group. Australia ranked 25th, two spots ahead of the United States at 27th. Laos, India, and Bangladesh occupy the bottom three positions.
Key Indicators and Global Trends
The EPI, produced periodically by Yale since 2002, evaluates countries across 47 environmental indicators, including air and water quality, forest sustainability, fisheries, farmland health, and actions to reduce pollutants like pesticides and greenhouse gases. The latest scorecard reveals long-term progress in reducing hazards such as unsafe drinking water and acid rain-causing pollution. However, the world continues to lag in addressing the climate crisis, with few nations on track to meet net-zero emissions commitments. Recent deadly heatwaves in Europe and the United States underscore the urgency.
Daniel Esty, an environmental policy expert at Yale, noted: "Air pollution has gotten a lot of attention in a number of countries and significant progress as a result, water availability, healthy drinking water is another issue that there's a quick public payback to in the political world." He added: "There's progress on some issues but not enough progress on a critical set of issues like climate change. And there's nothing like temperatures approach 40C in countries to help sharpen the focus on the need for a stepped up policy response."
US and China Performance
The US, under Donald Trump, has scaled back climate efforts, though the index uses data up to 2024, capturing the end of Joe Biden's presidency. Even then, US emissions were falling too slowly to reach net zero by 2050. China, the world's largest carbon emitter, has made significant strides in clean energy but still derives 56% of its electricity from coal, the dirtiest fossil fuel. It also performs poorly on marine conservation and biodiversity. China climbed to 129th position, having previously been near last due to dangerous air pollution, after relocating many coal-fired power plants away from cities. India, ranked near the bottom, faces criticism for tree cover loss, pesticide pollution risks, and poor ocean conservation. Esty remarked: "India's performance is shockingly bad for a country that aspires to be a leader in global terms on the economy."
UK and European Leadership
The UK's improved ranking reflects progress in protecting biodiversity on land and water, reducing indoor and outdoor air pollution, and cutting greenhouse gases. However, the report cautions that the ranking is relative, and the UK still falls short in areas like tree cover loss, bottom trawling, and fertiliser use. Esty commented: "Europe has really stepped out in front and is continuing to pursue climate change with not the full vigor it might have a few years back when the political circumstances were different, but they're getting the payback for decades now of work on this issue at the cutting edge." He added: "The laggards in the US and China both are still lagging, seem to be falling further behind and are holding back the global community's efforts to achieve the targets that have been agreed upon."
Wealth Disparities and Offshoring
The index often resembles a league table topped by wealthy countries, while poorer nations struggle to invest in sanitation or clean energy. The Yale researchers acknowledge that rich western countries offshore manufacturing and waste to developing nations, shifting pollution burdens overseas. Esty noted that low-cost options like scaling up renewables have been adopted, but harder reductions remain, especially in sectors like air travel that still rely on fossil fuels. Within Europe, agricultural sustainability varies, with the UK performing relatively well due to repurposed farm subsidies. Esty concluded: "With this kind of leaderboard very productive in spurring competitive efforts among leaders to do better, even the hardest of autocrats has called up for guidance."
