ranching

Native to the Himalaya and still exotic in North America, yaks have potential. They're environmentally sound, relatively easy to raise, have cashmere-like wool and lower-fat meat than beef. They're still a niche -- but gaining notice.

The Environmental Group WildEarth Guardians says an anachronistic part of the Department of Agriculture spent $117 million last year to kill 2.4 million animals. The Wildlife Services has changed names plenty of times, but dates back to the days when the prevailing wisdom was just to wipe out any...