Visit the incredible remnants of a village in the Arizona desert, a national monument that demonstrates what life was like ...

Readers have asked about Arizona's cleaner-burning gasoline formulas. Do they improve air quality, health and greenhouse gas ...

Ancient canal systems discovered in Arizona have transformed our understanding of the early civilizations of the American ...

Imagine an ear falling off a first century Roman statue and you’ll get an idea of what someone found at the Lake Mead National Recreational Area in Arizona. Photos of the fossil — yes ...

This oddly shaped fossil came from a 6-million-year-old rock formation in Lake Mead National Recreation Area along the Arizona-Nevada border. What is it? National Park Service image It has “an ...

including Arizona. "Victims of California’s war on fossil fuels include Arizonans who conduct business or make purchases in California," Petersen wrote. "California’s radical rules also will ...