Should Colorado River water be used to grow alfalfa or subdivisions in the Phoenix metropolitan area?
A warming climate has been linked to human activity around the world, and has affected the Colorado River System as well. The impacts are substantial, from reduced water flows, threats to indigenous species and the influx of new invasive species along the river system.
The Zuni tribe's homeland is one of the most parched sections of the country. The tribe has already declared three drought emergencies in the last 15 years. Will it survive the next one?
Scientists fear that eventually the toxic residue of more than a century of agricultural runoff will be blown into the air — and into the lungs of residents.