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  • Decision-making and anxiety in the time of COVID-19

    Penn experts discuss the psychology behind decision-making, how anxiety and stress impacts behavior, and share strategies for deciding how to safely reengage with society.
    two people on a bench wearing masks, a third person motions that they want to sit in an open spot while one person currently on the bench gives a hand motion indicating no
    Many Americans remain concerned about contracting COVID-19 at the same time that stories of massive parties and unsocially-distanced concerts make headline news. As society grapples with what a “new normal” should look like, how do people decide which activities are safe, and why do some people’s choices look vastly different than others? 

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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