In the season finale, Rick and Marco take a trip to the San Diego Zoo Safari Park Biodiversity Reserve to speak with Charlie de la Rosa, Ph.D., natural lands manager for San Diego Zoo Wildlife Alliance. This 900-acre preserve in San Diego's North County supports large expanses of coastal sage scrub vegetation along two regionally important wildlife corridors. Here, in the most biodiverse county in the continental United States, we take a look at the importance of native plants including the prickly pear cactus, and Charlie gives us insight on technology used to study the movement of mountain lions and other wildlife. We also discuss how conservation is all about people, our connections to one another, and to the delicately balanced ecosystems that we all share.