left to right: Bodil Mimi Krogh Schmidt-Nielsen (b. 1918), Knut Schmidt-Nielsen (1915-2007), and Barbara Wagner. The Schmidt-Nielsens were professors in comparative physiology at Duke University and Wagner was a secretary in the Duke zoology department. They are shown with research equipment being assembled for an expedition to the Sahara Desert to study camels. In the left foreground is a scale used for weighing camels