The construction of Egypt’s Great Pyramid has long baffled archaeologists, with no surviving ancient texts explaining how its massive stone blocks were lifted and assembled so quickly. Traditional ...

In the world of archeology, few tools have revolutionized the field as much as ground-penetrating radar (GPR). This geophysical technique uses radar pulses to image the subsurface. Similar techniques ...

City of Tucson rainwater-harvesting rebates, criticized before for not saving water, now save hundreds of homeowners an average of 10 percent in water use, officials say. Tucson Water says its ...