This year marks the 50th anniversary of San Diego Zoo Wildlife Alliance’s Frozen Zoo®. To learn about its history, hosts Rick and Marco speak with Rolf Benirschke, son of Frozen Zoo founder Kurt Benirschke. Rolf explains the events that inspired his father to start the Frozen Zoo, the creative ways we can all help conservation without being a scientist, and Rolf’s Kicks for Critters, a charity he started during his time in the NFL.