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Engaging history

Junior Margarita Ortiz conducted a comprehensive survey of 18 sites as a summer intern for Historic Germantown in her hometown of Philadelphia.
Student standing with historic buildings behind her.
Rising junior Margarita Ortiz, a history major, is a summer intern at Historic Germantown in her hometown of Philadelphia. 

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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