Storied L.A. Zoo California condor keepers Mike Clark and Chandra David are retiring after a life-changing and world-changing career. We’re catching up and saying goodbye with an epic recap of all the helicopters, climbing gear, cutting-edge science, and Advil it takes to save a species. Plus, discover the sounds, sights, sacrifices they will never forget and the eleventh-hour “hail Mary” that may help keep the condor program moving forward even as these two stalwarts are taking a well-deserved rest. Heads up: It’s going to be a literal cliffhanger.