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  1. Health & Medicine

    Why daylight saving time just isn’t healthy, according to science

    Shifting daylight from morning to evening puts our bodies and brains out of sync with our clocks, leading to a host of potential health issues.

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  2. Readers ask about photon rings and more

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  3. Forever chemicals’ health risks are getting attention

    Editor in Chief Nancy Shute discusses the health dangers of PFAS chemicals with freelance journalist Melba Newsome.

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  4. Health & Medicine

    DNA is providing new clues to why COVID-19 hits people differently

    Age, general health and vaccinations can affect how sick people get with COVID-19.