Andrea Pitzer talks about her book One Long Night: A Global History of Concentration Camps, one of the Smithsonian's Ten Best History Books for 2017

Paige Madison talks about her work at the Liang Bua cave in Indonesia where she studies Homo Floresiensis as well as the team of researchers who have worked at the cave for years, sometimes for generations.

Maria Nugent talks about Aboriginal Australians' first encounter with Captain Cook at Botany Bay, a violent meeting has come to represent the origin story of Australia's colonial settlement.

Stewart Gillmor -- the sole American at Mirny Station in 1961 and 1962-- continues his discussion of life at the Soviet base: how communism plays out 10,000 miles from Moscow, the problems with planes in Antarctica, and what to do when the diesel generator dies at the coldest place in the world.

Stewart Gillmor talks about his fourteen-month stay at Mirny Station, the Soviet Union's Antarctica base. Gillmor was the sole American at Mirny in 1960-1962 during the height of the Cold War.