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Reflections on public spaces in the age of COVID, protest

Ken Lum and Paul Farber of the Weitzman School of Design reflect on how public spaces are observed through a new lens during the pandemic. 
An empty Times Square during a rainy day
An empty Times Square during the COVID-19 pandemic.

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    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

    What stiffening lung tissue reveals about the earliest stages of fibrosis
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    Image: Courtesy of Penn Engineering Today

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    Sep 12, 2025