Zoos do more harm than good
Links to more PRO research:
The site provides background information about the about the conservation of endangered species, alternative ways for children to learn about animals (other than visiting zoos), and facts about how often zoos release animals into the wild.
This site is useful for both the proposition and the opposition. It provides information about the causes of endangerment, reasons to save endangered species, laws that protect endangered species, and more. This site is a good resource for background information on the topic.
Links to more CON research:
This article serves as an introduction. If you go to the bottom of the page, there are also links to articles about how zoos help conservation, research, and recreation. There is also an article about whether zoos are cruel.