Scientists solve the mystery of the widespread plunge in IQ across Europe 2,000 years ago

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Scientists solve the mystery of the widespread plunge in IQ across Europe 2,000 years ago

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It was one of the most technologically advanced empires in history. But the Romans may have been battling with cognitive decline due to pollution, according to a study. Researchers suggest that widespread lead pollution – caused by mining – lowered the IQ of essentially the entire European population at the time. For their study the team, from the Desert Research Institute in Nevada, examined ice cores – columns of ice up to 3,400m long that are extracted using enormous drills.
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