American Museum of Natural History
Around with World with DNA
A mammalogist, ornithologist, ichthyologist, and a conservation geneticist share their work and their hopes that their research will help protect and save endangered species and their habitats.
American Museum of Natural History
Going, Going...Gone?
Young environmentalists consider how scientists are attempting to save endangered species. They read about what causes extinction and steps to take to minimize the threats.
Smithsonian Institution
Smithsonian Libraries: Zoos, a Historical Perspective
An online sample of maps, drawings and photographs of zoos from over 30 states and 40 countries.