Dr. Pierre Comizzoli, reproductive physiologist and Acting Director of the Consortium for Understanding and Sustaining a Biodiverse Planet, will take you to the National Zoo's state-of-the-art reproduction laboratories, including the Genome Resource Bank of cryopreserved sperm, eggs, and embryos from endangered species. See the laparoscopic instruments used for artificial insemination in the giant panda, black-footed ferret, cheetah and others. See cells on the microscope to learn how scientists know the best timing for the inseminations; and learn about male reproductive problems and abnormal sperm observed in many endangered species.