The Colorado, the Gila, the Salt, the Verde, the Hassayampa, the Santa Cruz: Arizona’s rivers were lush green ribbons of life flowing through a desert landscape. They became sustaining paths for indigenous traders and immigrants leaving wagon tracks and settlements. The Hohokam built vast canals from the Salt to direct irrigation water for crops. European... Read More

The deep time perspective that archaeology, geology, and related disciplines provide about natural hazards, environmental change, and societal development is often ignored when societies today make decisions affecting social sustainability and human safety. Studies of ancient peoples and natural events can help modern society deal with problems of environmental and social change, overpopulation, and sustainability.... Read More