San Diego's Frozen Zoo: Preserving Panda Genes for the Future
Deep in the laboratories of the San Diego Zoo Wildlife Alliance, vials of panda genetic material — sperm, eggs, tissue samples, cell lines — are preserved in liquid nitrogen at -196°C. This 'Frozen Zoo' is the world's largest wildlife biobank, and its panda collection represents a genetic insurance policy for the species. This article explores the science, the ethics, and the future potential of panda genetic preservation.