9. The Himalayas

Examining the diversity of Himalayan habitats and wildlife, including snow leopards, red pandas, Asiatic black bears, musk deer, snub-nosed monkeys, Tibetan foxes and high-flying birds. Included: how eagles and wolves rely on teamwork to survive; how the blood of bar-headed geese has a special hemoglobin that enables them to fly in the thin air of the Himalayas. Also: the mountains' valleys, which are home to rain forests that conjure Shangri-La.