One of the last four Northern White Rhinos in the world died on Sunday.
The rhino, named Nola, had lived at the San Diego Zoo for most of her life in the hopes of preserving her species. With her dead, that leaves only three Northern White Rhinos left, all of them in Kenya.
Rick Schwartz, a zookeeper for the San Diego Zoo, joined us to tell us more about Nola and where their conservation efforts go from here.
Click the player above to hear the entire conversation.