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Immigrants and refugees from Syria and Iraq lead tours at Philadelphia\\u2019s Penn Museum. They help visitors understand where the museum\\u2019s artefacts come from and add historical context to the objects. Also, \\u201cvoluntourism\\u201d is a growing part of the travel industry, but critics say there\\u2019s sometimes a human cost for volunteer\\u2019s 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.)