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Immigrants and refugees from Syria and Iraq lead tours at Philadelphia鈥檚 Penn Museum. They help visitors understand where the museum鈥檚 artefacts come from and add historical context to the objects. Also, 鈥渧oluntourism鈥� is a growing part of the travel industry, but critics say there鈥檚 sometimes a human cost for volunteer鈥檚 good deeds; we meet Terry Tickhill Terrell, who in 1969 became one of the first women to join a US scientific expedition to Antarctica; a long, lost manuscript and its connection to Christopher Columbus; and a restaurant in Casablanca inspired by the classic Hollywood film.

(Image: Abdulhadi Al-Karfawi, a Global Guide at the Penn Museum, talks about an ornate headdress, which was found with the body of Queen Puabi in the Royal Cemetery at Ur, on a Sunday afternoon tour of the Middle East Galleries in 2018. Photo by Raffi Berberian, Penn Museum.)