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How can cities become healthier, greener, and more equitable in the future?

In a year marked by COVID-19, renewed calls for racial justice, a contentious presidential election, and an active wildfire and hurricane season, Penn experts share what’s needed to make urban areas more resilient to future crises.
Philadelphia skyline in daylight, looking east from Penn Campus at Franklin Field.
Experts in planning, design, and urban research from Penn share how cities have been impacted by 2020 and how they can become more resilient in the future. (Image: Eric Sucar)

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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