In this video segment adapted from NOVA scienceNOW, learn how scientists are hoping to better understand the biology of dinosaurs by studying the insides of fossil bones. Hear about the accidental discovery of dinosaur soft tissue by paleontologist Dr. Mary Schweitzer, and how this tissue enables scientists to learn more about dinosaur physiology and pathology. For example, soft tissue could provide information about toxins that led to dinosaur deaths.

This video is available in both English and Spanish audio, along with corresponding closed captions.