Why does history keep repeating itself? And what can cats tell us about this? Ashley Poust, Ph.D., is a paleontology researcher at the San Diego Natural History Museum. He focuses on vertebrates and evolutionary biology and explains how the study of extinct cats, like the sabertooth, can help us reconstruct ancient environments, gain a better understanding of our origins, see deeper into life's processes, and at the highest level, have a new view of the world. Series: "Triton Talks" [Science] [Show ID: 38073]