In the Star Talk Cosmic Queries podcast episode about dinosaurs, the hosts and guest expert, Kimberly Chappelle, explore various topics related to prehistoric life. They discuss the extinction event that wiped out the dinosaurs and how certain animals were able to survive, as well as the role of genetic diversity and location in survival. The hosts also touch on the physiology of dinosaurs and whether they were warm-blooded or cold-blooded, as well as the accuracy of depictions of dinosaurs in movies and media. The episode also includes listener questions and discussions about the recent discovery that many dinosaurs had feathers, and whether any parts of our body evolved from dinosaurs. The podcast is informative and entertaining, with a friendly conversational tone.