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Michael Hanchard on continuing injustice and the fight for equal protections

The chair and Gustave C. Kuemmerle Professor of Africana Studies, discusses the recent wave of protests following George Floyd, Breonna Taylor, and other unarmed Black women and men who were killed across the country.

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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