- Conservation of natural resources,
- Wolves -- North America
The article focuses on the wolves and the need for conservation plans including a wildlife corridor that runs from the Sierra Madre Occidental in Sonora, Mexico, north along the Rocky Mountains to the Yellowstone ecosystem and on to the Canadian Yukon. A broad coalition is working to protect and restore the health of the land, water and wolves in this 4,000-mile-long international passage, often referred to as the ?Spine of the Continent.?