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  1. Science & Society

    Social media harms teens’ mental health, mounting evidence shows. What now?

    Recent studies suggest a causal link between teen social media use and reduced well-being. Now, some researchers are looking into possible mechanisms.

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  2. Health & Medicine

    Taking a weight-loss drug reduced a craving for opioids

    Early results from 20 people with opioid use disorder raise hopes that popular weight-loss drugs like Wegovy can tackle opioid addiction, too.

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  3. Readers discuss quantum gravity and more

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  4. Come along with us on a mathematical mystery tour

    Editor in chief Nancy Shute discusses an unexpected breakthrough on a puzzle that has intrigued mathematicians for almost a century.