關注我們的地球:全世界10個最乾淨的國家
Researchers at Yale and Columbia ranked countries' environmental performance based on 25 metrics, including water and air quality, habitat protection and the impact of the environment on the health of the population. European countries make up more than half of the top 30, while the U.S. ranks 61st.
耶魯大學和哥倫比亞大學的研究人員根據25指標，包括水和空氣質量，棲息地保護和環境對人類健康的影響等，對世界各國的環保表現進行排名。歐洲國家佔據前30名的一半多，而美國僅排名第61位。
1. Iceland
EPI score: 93.5
GDP per capita: $36,000
Population: 311,000
In the category of air pollution (effect on humans), Iceland scored 97.4, compared with 84.8 for countries of similar GDP per capita.
1. 冰島
EPI（環保表現指數）得分：93.5
人均國內生產總值：36,000美元
人口：31.1萬
在空氣污染類別（對人類的影響），冰島得分爲97.4，而類似人均國內生產總值國家的平均得分爲84.8。
2. Switzerland
EPI score: 89.1
GDP per capita: $37,000
Population: 7.6 million
Switzerland scores a perfect 100 in forestry, water quality (effects on humans) and biodiversity and habitat. Like most rich, industrialized nations, its lowest scoring was in air pollution (effects on ecosystem).
2. 瑞士
EPI得分：89.1
人均國內生產總值：37,000美元
人口：760萬
瑞士在林業，水質（對人類的影響）以及生物多樣性和棲息地保護方面得到完美的100分。像大多數富裕的工業化國家一樣，其得分最低的是空氣污染（對生態系統的影響）。
3. Costa Rica
EPI score: 86.4
GDP per capita: $9,600
Population: 4.5 million
That such a relatively poor and developing country ranks third in the EPI is testament to the natural endowments of Costa Rica, with dense forests, plentiful water and abundant wildlife. With smart development, Costa Rica can avoid the standard path that growing nations take of polluting their environment, only to clean it up again once they become wealthy. Costa Rica touts its EPI ranking in ads for its tourism sector.
3. 哥斯達黎加
EPI得分：86.4
人均國內生產總值：9,600美元
人口：450萬
這樣一個相對貧窮的發展中國家能排名第三，證明了哥斯達黎加的自然優勢，茂密的森林，充足的水資源和豐富的野生動植物。如能明智地控制其發展過程，哥斯達黎加就能避免重蹈發展中國家以往先污染環境，富裕後再回頭治理的覆轍。哥斯達黎加利用其EPI排名的優勢大作廣告，以發展其旅遊業。
4. Sweden
EPI score: 86
GDP per capita: $33,400
Population: 9.1 million
Sweden has bragging rights, for the moment, among the Scandinavian states, where out-greening one another is a regional competition.
4. 瑞典
EPI得分：86
人均國內生產總值：33 400美元
人口：910萬
就目前而言，在斯堪的納維亞國家中，瑞典還有資格自吹自擂，然而在該地區，彼此間在綠化方面的競爭非常激烈。
5. Norway
EPI score: 81.1
GDP per capita: $48,000
Population: 4.7 million
Norway is a nation of astonishing wealth, built on vast offshore reserves of oil and natural gas. The global warming impact of those fossil fuels is not debited from Norway's results, rather it is recognized in the nations that burn them
5. 挪威
EPI得分：81.1
人均國內生產總值：48,000美元
人口：470萬
挪威是一個驚人的富裕國家，擁有儲量巨大的近海石油和天然氣。這些化石燃料對全球變暖的影響不能記在挪威的賬上，而應由那些使用燃料的國家承擔。
6. Mauritius
EPI score: 80.6
GDP per capita: $10,000
Population: 1.3 million
A tiny island nation in the Indian Ocean to the east of Madagascar, Mauritius is far and away the highest-ranking nation of Sub-Saharan Africa; Djibouti comes second with a score of 60.5. Isolation is its benefit, helping keep pollution low and attracting a tourist trade eager to enjoy healthy marine areas.
6. 毛里求斯
EPI得分：80.6
人均國內生產總值：10,000美元
人口：130萬
毛里求斯只是印度洋中，馬達加斯加東面的一個小小島國，但在撒哈拉以南非洲國家中排名遙遙領先；排名第二的吉布提只有60.5分。與世隔離是它的優勢，有助於保持低污染，從而吸引那些渴望享受健康海洋生活的旅遊者。
7. France
EPI score: 78.2
GDP per capita: $31,000
Population: 62 million
By far the most populous country in the top 10, France ranks very high in air and water quality and fisheries management. The EPI methodology benefits countries with significant nuclear power programs.
7. 法國
EPI得分：78.2
人均國內生產總值：31,000美元
人口：6200萬目前世界前10名中人口最多的國家，法國在空氣和水質量以及漁業管理方面排名非常高。EPI的評分方法有利於那些大量使用核電的國家。
8. Austria
EPI score: 78.1
GDP per capita: $35,000
Population: 8.3 million
Neck and neck with France, Austria benefits in the rankings by being landlocked. With no fisheries to be evaluated, Austria's 100 score on biome protection gets a greater
weighting.
8. 奧地利
EPI得分：78.1
人均國內生產總值：35,000美元
人口：830萬
與法國並駕齊驅，奧地利的排名得益於其地處內陸的優勢。由於沒有參與漁業評估，奧地利在生物羣落保護方面得到的100分對其綜合得分影響很大。
9. Cuba
EPI score: 78.1
GDP per capita: $8,500
Population: 11.3 million
Does Cuba prove that a communist idyll can also be an environmental one? Don't count on it. Researchers doubt the veracity of Cuba's data, which shows higher levels of public health, (including almost universal access to sanitation and clean water) than GDP would suggest. The average EPI score for Cuba's income peer group is 65.7.
EPI得分：78.1
人均國內生產總值：8500美元
人口：1130萬
古巴是否能證明一個共產主義世外桃源也可以成爲一個環保國家呢？不要指望它。研究人員懷疑古巴數據準確性，因爲其數據表明公衆健康狀況（包括幾乎普遍能獲得衛生服務和清潔水），高於國內生產總值所能承擔的水平。而古巴EPI平均收入在同組的得分只有65.7
10. Colombia
EPI score: 76.8
GDP per capita: $7,600
Population: 44 million
The poorest country in the top 10, Colombia's high ranking is due to the quality of its natural endowments. Its score for biodiversity and habitat, at 82.7 compares with an average of 51 for its income group. Colombia's carbon emissions are relatively low because of plentiful river systems feed enough hydropower generators to supply some 70% of electricity needs.
10. 哥倫比亞
EPI得分：76.8
人均國內生產總值：7,600美元
人口：4400萬
哥倫比亞是前10名中最貧窮的國家，其高排名源於其得天獨厚的自然資源質量。在生物多樣性和棲息地保護方面其分數爲82.7，而同等收入國家一組的平均分只有51。哥倫比亞的碳排放量相對較低，因爲豐富的水系足以保證水能發電機的運轉，能滿足約70％的電力需求。
