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Arsenic Antidote Hidden In Our Genes

At more than 12,000 feet above sea level, the town of San Antonio de los Cobres, Argentina, sits on volcanic bedrock, which leaches arsenic into the drinking water. (Guigue/Wikimedia)
At more than 12,000 feet above sea level, the town of San Antonio de los Cobres, Argentina, sits on volcanic bedrock, which leaches arsenic into the drinking water. (Guigue/Wikimedia)

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