Inside the San Diego Frozen Zoo's Genetic Archive

Curator Marlys Houck leads this all-female team, processing tissue samples collected from animals that have died of natural causes. By cultivating and freezing these cells, the laboratory maintains a biological bridge to the future, potentially offering a second chance to species currently facing extinction. The work relies on the foresight of founder Kurt Benirschke, who began the collection at the University of California at San Diego before relocating it to the zoo. Benirschke famously argued that preservation should occur even without immediate applications, guided by the belief that one must collect resources for reasons yet to be understood. Today, the pressure on the lab is constant. Every species lost in the wild represents a permanent gap in their cryo-collection. These scientists operate with the understanding that they are the final guardians of genetic blueprints that could otherwise vanish, turning a basement laboratory into a vital front line for global conservation.