Just north of Medellín, the discovery of a disease-causing mutation in a previously unstudied family is rewriting history and upending racial myths

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A happy side effect of face transplants? Blending in. “Finally, nobody is paying attention to them.”

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Secret recordings captured physicians’ concerns that more children seemed to fare poorly after heart surgery. Their hospital kept doing the operations

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A baby with incandescent green eyes, a baby stamped with a bar code, another with a glowing gold brain: these are some of the images illustrating stories about the gene-edited twin girls born last November after the world learned of Chinese scientist He Jiankui’s controversial efforts to modify embryos

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Cancer drugs that speed onto the market based on encouraging preliminary studies often don’t show clear benefits when more careful follow-up trials are done, according to research published Tuesday

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Researchers have analysed anonymized phone records of tens of millions of people in low-income countries. Critics question whether the benefits outweigh the risks

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A fertility clinic in Dubai emailed He Jiankui on December 5 — just a week after he announced the births — asking if he could teach its clinicians “CRISPR gene editing for Embryology Lab Application.”

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In 16th- and 17th-century Europe, physicians, butchers, and executioners alike hawked the salutary effects of Axungia hominis

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