Given enough time and exposure to a hazard, life has shown a remarkable ability to adapt to all sorts of wild conditions — from extreme heat to complete lack of oxygen to dangerous radiation levels. But for a group of people living high in the Argentinian Andes, an unusual genetic advantage has given them the ability to consume drinking water containing the highly toxic chemical element arsenic. @ScienceAlert tells us more about how scientists remain puzzled by their ability "to shrug off dangerously high arsenic levels."

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