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• Music   • Entertainment  Yang Sook, owner of Seoul Mart in
Pittsburgh  The Rustbelt, Again? part 1 2 3 4  Seoul Mart, a
corner grocery store, opened last year along a busy street that
runs between Carnegie Mellon and the University of Pittsburgh.
Owner Yang Sook, a Korean immigrant, says the store sells a lot
of ramen noodles and kimchi to its customers, mostly young
Asians. "Not only Korean students, they are Chinese, Thai,
Philippine, Japanese."  A century ago, immigrants poured into
Pittsburgh, almost all of them from Europe. Only one in 100 was
from Asia. Now it's one in five. But the city's overall
immigration rate is well below the national average, and that's
a problem. In a study, Duquesne University said within a decade,
the city may face a labor shortage of up to125,000 workers.
Skilled jobs are already going unfilled.  "This region has
profited from immigration over the past 20 to 30 years, [but]
not in the numbers, particularly in t