Parasites (IMAGE) Smithsonian Caption An assortment of specimens from the Smithsonian's National Parasite Collection at the National Museum of Natural History. The National Parasite Collection holds more than 20 million parasite specimens in connection with information about their geographic distribution and host animals. A team of researchers drew on this collection to analyze the impact of climate change on parasite biodiversity in the 21st century. Their findings are published in the Sept. 6 issue of Science Advances. Credit Paul Fetters for the Smithsonian Institution Usage Restrictions News-media use of these photos in relation to this study is permitted with attribution. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.