(DC) (Smithsonian) Join the National Museum of Natural History for the new series, Behind the Science, where NMNH researchers share insights into their latest discoveries and explore the fascinating questions driving their work—from the origins of life to the future of our planet. During the past 25 years, studies of insect and pathogen damage on fossil and modern leaves have addressed the response of herbivores to major events of the fossil record. Let’s put damaged, fossil leaves to work in helping us to understand how insect and pathogen herbivores have historically transformed the world we live in.