Dirtiest Cities in the World

Antananarivo, Madagascar:

Madagascar is located off of the southeastern coast of Africa in the Indian Ocean. Antananarivo, the capital city is one of the dirtiest cities. Madagascar is well known for its variety of unique flora and fauna and has often been referred to as the world's eighth continent, but the effects of the human population are quickly leaving their footprint. Antananarivo was also ranked the world's second-most-polluted city on last year’s WHO report.

Port au Prince, Haiti:

Haiti's politically inspired violence and corruption are well documented. Equally dangerous is its air and water. Serving as one of the major ports on the island of Hispaniola, Port au Prince is central to Haiti's economic development. A lack of pollution controls, but contributes to the widespread environmental problems confronting the Haitian city.