Stem Cells May Save Northern White Rhinos

At a meeting in Vienna from Dec. 3 to Dec. 6, researchers developed a plan to use stem cells to create fertilized rhino embryos, which will be carried by surrogate southern white rhino females. This past year has been a sad one for northern white rhinos, a rapidly disappearing subspecies destroyed by habitat loss and poaching. An infection claimed Nola, a 41-year-old female at the San Diego Zoo, in November.