What’s horned, fluffy, and ethically dubious? Yak clones

By Jessie Yeung, CNN Hong Kong (CNN) — On the high-altitude plains of Tibet, ringed by snowy mountains and buffeted by harsh winds, scientists are hard at work creating horned, fluffy clones. These are Tibetan yaks, designed and cloned in secretive labs more than 4,000 meters above sea level, where researchers hope to create an