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What craigslist can teach us about Web 2.0

In a new book, Annenberg’s Jessa Lingel views modern online life through the lens of a site that hasn’t changed much in look or feel since it began 25 years ago.
A person standing in a library stack, with shelves of books on either side.
Jessa Lingel, an assistant professor at the Annenberg School for Communication.

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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