We all love to see a conservation project on a previously endangered wildlife species succeed. But what happens if a formerly small population grows to a point where its size becomes unsustainable? Performing a cull? Definitely not the most pleasant option. Our guest, Dr Ai-Mei Chang, works on a way more ethical solution: She develops and tests immuno-castration vaccines for the population control of wildlife species. In addition, she has worked on a range of infectious diseases in small wild carnivores.  Ai-Mei completed her degree in veterinary medicine and her PhD at the National Pingtung University of Science and Technology in Taiwan. Since Feb this year, she has been working as a postdoctoral researcher at the University of Tasmania in Australia. Check out Ai-Mei's website here.