In the Kham region of Tibet, there are families who have been nomadic herders for thousands of years. Almost everything they need, they get from a herd of yaks who graze on the wide expanse of grassy hills within sight of the distant peaks of the Himalayas. Last fall, Stephanie Guyer-Stevens went to Kham and met a family of nomads and their yaks. She heard about the spirits that protect the holy mountains, and learned about some yak economics. Families now send their kids away to school, and there is increasing pressure for them to join the modern economy. The nomadic life is gradually fading away.