Hồn Việt Quốc Kỳ
Drinking water in Vietnam has excessive arsenic
More than a quarter of drinking wells in Vietnam's densely-populated Red River delta contain unsafe levels of arsenic that can cause cancer, neurological problems and hypertension, researchers warned on Tuesday.
In a paper published in the journal Proceedings of the National Academy of Sciences, they also said 44 percent of the wells in the delta carried levels of manganese that exceed World Health Organization guidelines.
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