CNN  —  Professor Suzannah Williams wishes she didn’t have to spend her days analyzing poop samples. It’s a dirty job; but someone’s got to do it. Biodiversity is rapidly dwindling, with wildlife populations declining by an average of 73% between 1970 and 2020. For Williams, and her small team at Oxford University in the UK, animal feces contain answers that could help conservationists better monitor wildlife, and perhaps even restore dwindling populations. When animals defecate, they shed