According to a synthesis of the global environment by the United Nations Environment Programme (UNEP) in Hanoi and Ho Chi Minh City for 6 most serious air pollution in the world. About the concentration of dust, the two largest cities in Vietnam only after Beijing, Shanghai, New Delhi and Dhaka. The potential threat is sure to impede the further development of the city. According to a study on the environmental indicators stabilized by Yale University (USA) in South, Vietnam ranks the lowest ranking among Southeast Asian countries 8.
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