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The article discusses zoos and the challenge of deciding whether to keep the animals the public most wants to see or saving threatened species. Topics include the author's photography initiative to document biodiversity, called Photo Ark, the artificial insemination (AI) of a Sumatran rhino at the Center for Conservation and Research of Endangered Wildlife at Ohio's Cincinnati Zoo, named Suci, and zoos as the last refuge against extinction.

Focuses on the conservation of the Siberian cranes in Asia. Number of Siberian crane species; Nursing of the crane hatchlings; Use of artificial insemination to breed the cranes.

Reports the birth and development of two panda cubs at China's Cheng-du Giant Panda Breeding Research Base. Why artificial insemination was used for conception; Details of a deal to lease the pandas to Zoo Atlanta for at least ten years; Law that requires the zoo to contribute one million dollars a year for panda conservation in China.