How do wombats produce cube-shaped poop? Patricia Yang at Georgia Tech set out to investigate. Yang studies the hydrodynamics of fluids, including blood, processed food and urine, in the bodies of animals. She was curious how the differences in wombats' digestive processes and soft tissue structures might explain their oddly shaped scat. During the APS Division of Fluid Dynamics 71st Annual Meeting, Nov. 18-20, Yang will explain findings from dissecting the alimentary systems of wombats.