Iceland is the cleanest country in the world. This may be hard to believe right now, what with the clouds of volcanic ash grounding flights across northern Europe, but according to researchers at Yale and Columbia universities, the Nordic island ranks first out of 163 countries on their Environmental Performance Index.
Researchers ranked countries based on 25 indicators, including water and air quality, greenhouse gas emissions and the impact of the environment on the health of the population. A score of 100 is excellent. Sierra Leone ranks at the bottom of the list with a score of 32. The U.S. ranks in the middle of the pack with 63.5. Iceland took top honors with a score of 93.5 thanks to ample clean water, lots of protected nature areas, good national health care and a plenitude of usually clean geothermal power.
Researchers ranked countries based on 25 indicators, including water and air quality, greenhouse gas emissions and the impact of the environment on the health of the population. A score of 100 is excellent. Sierra Leone ranks at the bottom of the list with a score of 32. The U.S. ranks in the middle of the pack with 63.5. Iceland took top honors with a score of 93.5 thanks to ample clean water, lots of protected nature areas, good national health care and a plenitude of usually clean geothermal power.
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