Calgary ranks #1 on Forbes list of The World's Cleanest Cities
The cleanest cities are largely located in countries noted for their democracy and their industrialization. The only Asian cities represented are in Japan. There are no top-25 clean cities in South or Central America, Africa and Australia. The U.S. has five of the top 25; Canada, a strong five, with the top spot its city of Calgary; Europe has 11 of the top 25; and Japan has three.
Which is dirtiest? Baku, Azerbaijan.
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