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  • Eight new pups report for duty

    More than half dozen 12-week-old black Labrador retrievers, called the U litter, are already deep into their training at the School of Veterinary Medicine’s Working Dog Center.
    Penn Vet Working Dog Center trainer with puppy on the floor
    Urban, a three-month-old black Labrador retriever, trains with Danielle Berger at the Penn Vet Working Dog Center. Berger is leading the training for the U litter, composed of Urban and seven of her brothers and sisters, with assistance from interns including (left to right) Charlotte Kronick, Dominique Andrews, Trevor Vidas, and Tesa Stone.

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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