Top Performers in Climate Action
Estonia, Luxembourg, and the UK rank as the top three countries in the latest biennial environmental performance index published by Yale University, which assesses efforts to tackle pollution and other environmental challenges. Estonia retains its position as the highest-ranked country among 177 assessed, credited to its recent strong initiatives to reduce greenhouse gas emissions and protect ecosystems. Luxembourg follows in second place, with the UK rising to third from fifth in the 2024 index.
European nations dominate the top 20 rankings, with Japan as the only non-European country in 16th place. Australia is ranked 25th, just ahead of the United States at 27th. Laos is the lowest-ranked country, with India and Bangladesh also among the bottom three.
Scope and Findings of the Yale Environmental Performance Index
The environmental performance index, produced periodically by Yale since 2002 and provided to prior to its wider release, evaluates countries based on 47 environmental indicators. These include success in reducing air and water pollution, sustainability of forests, fisheries, and farmlands, and efforts to reduce pollutants such as pesticides and greenhouse gases.
Overall, the index reveals long-term improvements in reducing environmental hazards like unsafe drinking water and acid rain-causing pollution. However, global progress on the climate crisis remains insufficient, with few countries on track to meet net zero emissions commitments. Recent deadly heatwaves in multiple regions underscore the urgency of addressing climate change.
Expert Insights on Progress and Challenges
“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,” said Daniel Esty, an environmental policy expert at Yale.
“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.”
Climate Threat and Global Temperature Trends
Scientists warn that the rapidly warming world is poised to breach internationally agreed temperature thresholds, which will exacerbate heatwaves, storms, droughts, and conflicts. A new annual global temperature record is nearly certain within the next four years, with El Niño expected to increase heat in many regions.
US and China’s Climate Efforts
Despite worsening conditions, some countries, notably the US under the Biden administration, have recently reduced efforts to combat climate change. The Yale index uses data up to 2024, reflecting the latter part of Biden’s presidency rather than the Trump era, yet still finds US emissions declining too slowly to meet the 2050 net zero target required to avoid catastrophic climate impacts.
China, the world’s largest carbon emitter, has made significant advances in clean energy development but continues to rely heavily on coal, which accounts for 56% of its electricity generation. The country also scores poorly on marine conservation and biodiversity stewardship.
UK’s Environmental Progress and Challenges
The report highlights the UK’s achievements in protecting biodiversity on land and water, reducing indoor and outdoor air pollution, and lowering greenhouse gas emissions. However, it cautions that the UK’s ranking is relative and that it still faces challenges such as high rates of tree cover loss, bottom trawling, and fertilizer use.
“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,” said Esty.
“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.”
China’s Ranking and Environmental Issues in India
China has improved its ranking to 129th, up from near the bottom due to severe air pollution in major cities. This improvement followed the removal of many coal-fired power plants near urban areas. Conversely, India is penalized for tree cover loss, pesticide pollution risks, and poor ocean conservation, with Esty remarking on the country’s poor performance despite its economic ambitions.
Wealth Disparities and Pollution Burdens
The index often reflects wealth disparities, with richer countries better able to invest in sanitation and clean energy, while poorer nations struggle and rank lower. Additionally, Yale researchers note that wealthy Western countries frequently outsource manufacturing and waste disposal to developing countries, effectively shifting pollution burdens abroad.
Opportunities and Obstacles in Emission Reductions
Esty emphasizes that many countries have adopted low-cost emission reduction strategies, such as expanding renewable energy sources like solar and wind, which have become more affordable. However, achieving the deeper emission cuts required for net zero by 2050 remains challenging, particularly in sectors like air travel that still heavily depend on fossil fuels.
Variations Among Wealthy Countries
Among affluent nations, the US generally ranks lower than its peers, while Europe tends to perform poorly on agricultural sustainability, with the UK as an exception due to its efforts to repurpose farm subsidies to support sustainability outside of Europe.
Impact of the Scorecard on Global Environmental Policy
The comprehensive work behind the scorecard serves to motivate countries to improve their environmental performance relative to regional neighbors. Leaders from countries including Denmark, Turkey, Oman, and the Democratic Republic of the Congo have engaged with Yale researchers to explore ways to enhance their scores.
“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,” Esty said.
