Improving zoos
b'Zoos are big players in conservation, investing 750 million dollars in conserving species in the wild. Researchers from Trinity College Dublin discovered, maybe unsurprisingly, that zoos with more visitors are able to contribute more to conservation projects. But what exactly gets people to visit a zoo? Megan McGregor spoke to the study\'s lead author, Andrew Mooney... Like this podcast? Please help us by supporting the Naked Scientists'