Last of three episodes.
The Arctic - a huge and largely unspoilt wilderness of exceptional beauty - still teems with wildlife. The traditional skills of the early Eskimo hunters enabled them to survive in the Arctic without squandering its wildlife. But today snowmobiles and rifles have almost replaced huskies and harpoons, and the Eskimo people now share their harsh domain with oil-men, miners and scientists. Will the rich reserves of oil and minerals be extracted without pollution? And can animals like whales, caribou, musk-oxen and, above all, the ice bear, be protected? (R)