A good zoo is no longer merely a warehouse
for displaying exotic creatures driven mad by captivity and isolation.
Vanishing species must be preserved, bred, and if their habitats still
exist, reintroduced to the wild. The storage of embryos frozen in liquid
nitrogen, artificial insemination, and international mating programs to
reduce inbreeding - all safeguard those animal populations now virtually
restricted to zoos. For example, from implanted embryos the prolific eland
antelope may soon bear the offspring of the beautiful, related, but virtually
extinct bongo. Most good zoos work actively to raise public awareness
of the immediacy of the problem. Unless the world is soon sensitized to
conservation, we face an immeasurably poorer future.