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  • A look back at 2024 through Penn Today stories

    Revisit some of the stories that highlighted the events, breakthroughs, people, and research across the University this year.
    A grid of 12 images from Penn Today stories.

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  • Exposure to air pollution worsens Alzheimer’s disease
    Emissions from a power plant.

    Image: Pencho Chukov via Getty Images

    Exposure to air pollution worsens Alzheimer’s disease

    New research from Penn Medicine finds living in areas with high concentration of air pollution is associated with increased buildup of amyloid and tau proteins in the brains of Alzheimer’s patients, accelerating cognitive decline.

    Sep 9, 2025