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  • Developing a new platform for DNA sequencing

    Research from the lab of Marija Drndić in the School of Arts & Sciences shows how solid state materials can be developed for large-scale automated sequencing by incorporating state-of-the-art fabrication and analytics.
    diagram showing double stranded DNA moving through different types of geometric pores on a slab of material
    Using silicon nitride membranes with nanometer-level control of pore geometry, diameter, and thickness, a team of Penn researchers found that individual DNA strands could be distinguished between two pores that were housed on a single membrane. (Image: Patrick Lane/ScEYEnce Studios)

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  • OpenAI, DeepSeek, and Google vary widely in identifying hate speech
    Two people work on coding at computer.

    Image: Kindamorphic via Getty Images

    OpenAI, DeepSeek, and Google vary widely in identifying hate speech

    Neil Fasching and Yphtach Lelkes of the Annenberg School for Communication have found dramatic differences in how large language models classify hate speech, with especially large variations for language about certain demographic groups, raising concerns about bias and disproportionate harm.

    Sep 10, 2025