This episode explores the links between nature and COVID-19, and between nature and zoonotic disease in general. We examine the common assertion that the degradation or destruction of ecosystems is a cause of pandemics, and not just correlated with them. David helps to alleviate some (but perhaps not all) of my concerns about the accuracy of the literature on this subject. David Duthie is a conservationist who worked on biodiversity for many years in the United Nations, in Nairobi, Geneva, and Montreal. Although he is now retired he remains involved in conservation at the local level, in Oxford, and he has built an electronic library of (at time of writing) almost 75,000 publications related to biodiversity.Links to resources can be found at www.case4conservation.com.Visit www.case4conservation.com