The ancient irrigation networks lying below Phoenix could offer a solution to the sprawling desert city's water problems.
Mar 13, 2011   Archaeology
Irrigation canals dating back to the year 1200 B.C. were discovered in Arizona this year, answering a long-asked question about how natives were able to farm the arid land.
Dec 13, 2009   Archaeology
World Monuments Watch has released a list of the world's 100 most endangered sites.
Oct 16, 2003   Archaeology