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  1. Readers ask about malaria parasites, searching for alien intelligence and more

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  2. Life

    Giant worms may have burrowed into the ancient seafloor to ambush prey

    20-million-year-old tunnels unearthed in Taiwan may have been home to creatures that ambushed prey similar to today’s monstrous bobbit worms.

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  3. Physics

    50 years ago, scientists poked holes in the existence of polywater

    In 1971, scientists were casting doubt on an anomalous form of water. Fifty years later, water’s odd properties are still mysterious.

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  4. Psychology

    The COVID-19 pandemic made U.S. college students’ mental health even worse

    College students struggled with mental health problems before the pandemic.