PHILADELPHIA, Pennsylvania, May 11 (TNSres) -- The University of Pennsylvania School of Arts and Sciences issued the following news: While Azerbaijan and Mississippi are very different places for archaeological fieldwork, Qi Liu noticed a commonality on the first two excavations she joined, both during the summer of her second year at Penn: They were female-directed with a predominantly female crew. Traveling to Oman that winter, she again joined a team of mostly women. Liu, now a fourth-year  more PR