One third of macaque babies are especially sensitive to the opioids their brains produce when they are around their mothers; these babies are inconsolable when their mothers go missing. | Harper's Magazine

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One third of macaque babies are especially sensitive to the opioids their brains produce when they are around their mothers; these babies are inconsolable when their mothers go missing.

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One third of macaque babies are especially sensitive to the opioids their brains produce when they are around their mothers; these babies are inconsolable when their mothers go missing.

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