Ranking of countries according to environmental efficiency The ranking was conducted by the Environmental Performance Index (Elite) by researchers from Yale and Columbia Universities. It assesses 47 indicators, including the impact of the environment on human health, ecosystem health and climate policy.

Ranking of countries according to environmental efficiency The ranking was conducted by the Environmental Performance Index (Elite) by researchers from Yale and Columbia Universities. It assesses 47 indicators, including the impact of the environment on human health, ecosystem health and climate policy.