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Kobe,  Japan

Koberanks high on many quality - of - life factors, such as life expectancy and literacy (the latter is almost 100%). Regarding cleanliness, the city boasts separate storm drainage from sewage so that heavy rains don’t affect waste treatment, and the well - designed road systems keep traffic moving steadily, ensuring less polluting emissions from backed-up traffic.

Yoshikazu Onishi | Sebun Photo | Getty Images