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When people think of digital communications, they tend to imagine data speeding invisibly through the air. But even in this era of ubiquitous wireless technology, their networks still rely heavily on physical connections: fiber optic wires traverse oceans and tie together continents. The number of these undersea cables is increasing, and they play an important role in their high-tech society. Yet the undersea cable industry is largely unknown and suffers from a chronic labor shortage. Opportunities abound for engineers in many disciplines, but most don't know about the possibilities or where to get training. A new curriculum at the University of California, Berkeley, is attempting to address both challenges. Housed in the Berkeley Center for New Media, the certificate program takes an interdisciplinary approach to global internet infrastructure, including the "technical, economic, legal, environmental, and social dimensions." Nicole Starosielski, a UC Berkeley film and media professor, developed the program. She teaches classes and supervises projects on digital infrastructures in addition to conducting research on elements such as data centers and undersea cables. Over her decade in the industry, she has heard repeatedly about the labor challenges. "We need additional people," she says.