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  • A unique perspective on renewable energy

    In a conversation with Rachel Kyte, the U.N. special representative and CEO of Sustainable Energy for All discusses how this energy sector has changed in the past decade and what happens when political will doesn’t match the science.

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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