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South Korea crisis, explained
A crowd of people are gathered in a public square, facing left, holding candles and carrying signs in a vigil calling for the South Korean president’s resignation.

People gather in Seoul, South Korea, for a candlelight vigil to call for President Yoon Suk Yeol’s resignation on Dec. 4, following his short-lived martial law declaration.

(Image: Kyodo via AP Images)

  • Q&A

    • South Korea crisis, explained

    South Korea plunged into a state of national crisis this week over a six-hour martial law declaration by President Yoon Suk Yeol. Roiled by his own sinking popularity and now facing an impeachment inquiry, Yoon’s political future is now on the line.
    A greener, cleaner way to extract cobalt
    A large setup infrastructure for mining gold and other minerals in Australia.

    (Image: Alfio Manciagli)

    A greener, cleaner way to extract cobalt

    Penn researchers led a collaborative effort pioneering safer, more sustainable technique to extract elements critical to battery-powered technologies. Findings pave the way for getting value from materials that would otherwise be considered waste.
    Jeffrey Kallberg named interim dean of Penn Arts & Sciences
    Jeffrey-kallberg

    Jeffrey Kallberg is the the William R. Kenan Jr. Professor of Music, and has been appointed deputy dean of Penn’s School of Arts & Sciences.

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    Jeffrey Kallberg named interim dean of Penn Arts & Sciences

    Jeffrey Kallberg has been named interim dean of the School of Arts & Sciences at the University of Pennsylvania, effective Jan. 1. Kallberg currently serves as deputy dean and the William R. Kenan Jr. Professor of Music.The announcement was made today by Interim President J. Larry Jameson and Provost John L. Jackson Jr.
    Rivers in a changing world
    Penn students and Sayre high school students wading in a river in Cobbs Creek.

    Sayre ninth-grade science teacher LaRon Smith (center) is a former landscape gardener from South Philadelphia who switched careers to mentor a younger generation. “I think my passion is for them to be better individuals, better human beings,” Smith says.

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    Rivers in a changing world

    A new Academically Based Community Service class brings Penn and William L. Sayre High School students together to learn environmental science and engineering.

    Kristina García

    A Q&A with the director of the Penn Center for AIDS Research
    Four people in front of National AIDS Memorial Quilt.

    Penn researchers affiliated with the Penn Center for AIDS Research (CFAR) attended AIDS Walk Philly in October 2024. Pictured with the National AIDS Memorial Quilt are Deratu Ahmed, a first-year epidemiology doctoral student studying pharmacogenetics related to HIV and tuberculosis in Botswana; Dominique Medaglio, a fourth-year epidemiology doctoral student studying ways to encourage smoking cessation for people with HIV in the United States; CFAR co-director Robert Gross, professor of medicine and epidemiology in the Division of Infectious Diseases at Penn Medicine; and CFAR director Ronald Collman, professor of medicine and microbiology.

    (Image: Courtesy of Ronald G. Collman)

  • Q&A

    • A Q&A with the director of the Penn Center for AIDS Research

    Ronald G. Collman talks about the current state of AIDS care, work with the City of Philadelphia, and how the Center is supporting collaborations across campus.
    When does waiting stop being worth it?
    Rendering of a human brain and arrows coming out of it as thought it’s making a decision.

    New research from Penn psychologist Joe Kable looks at individuals with damage to different parts of the prefrontal cortex to reveal how the brain evaluates uncertainty and guides split-second decisions.

    (Image: iStock/ALLVISIONN)

    When does waiting stop being worth it?

    Psychologist Joe Kable examined how lesions in specific parts of the prefrontal cortex reveal the brain’s strategies for managing delayed gratification.
    Research connecting the land and the sea
    Illustration of a historic maritime harbor.

    Image: Courtesy of Picryl

    Research connecting the land and the sea

    Ph.D. candidate Chelsea Cohen, a historical and maritime archaeologist in Penn’s School of Arts & Sciences, combines terrestrial and underwater methods in her research of historical port cities, agroforestry, and maritime culture.

    From The McNeil Center for Early American Studies

    How to reduce partisan animosity
    A cartoon elephant and donkey next to an American flag.

    Image: iStock/Samuil_Levich

    How to reduce partisan animosity

    Matthew Levendusky, a professor of political science in Penn’s School of Arts & Sciences, explains the results of a megastudy that explores whether anything could bridge the political gap between the left and right among Americans.

    Michele W. Berger

    Patterns of Soviet Jewish emigration in the post-Stalin era
    A woman in a grey dress stands in front of colorful trees. She is smiling with her arms crossed.

    Alexandra (Sasha) Zborovsky traveled to countries including Lithuana, Georgia, and the Netherlands for her research into Soviet Jews’ emigration from the USSR.

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    Patterns of Soviet Jewish emigration in the post-Stalin era

    For four decades, more than one million Jews left the USSR despite the Soviet Union’s complex bureaucracy and opposition to emigration. Doctoral candidate Sasha Zborovsky explores the intricate dynamics.