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The role of UN ambassador, explained

Zeid Ra’ad Al Hussein, distinguished global leader-in-residence at Perry World House, describes the workings of the U.S. ambassador to the U.N.—and whether it matters that it’s no longer of cabinet status.
United Nations member flags raised outside of the UN building in New York

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  • A world shaped by water and access
    Three people test water below a sand dam.

    Griffin Pitt, right, works with two other student researchers to test the conductivity, total dissolved solids, salinity, and temperature of water below a sand dam in Kenya.

    (Image: Courtesy of Griffin Pitt)

    A world shaped by water and access

    Griffin Pitt’s upbringing made her passionate about water access and pollution, and Penn has given her the opportunity to explore these issues back home in North Carolina and abroad.

    Oct 8, 2025