Stone circles recently mapped at Aspero, a coastal settlement in Peru’s Supe Valley, could represent the oldest purpose-built sky observatory in the Americas, predating the well-documented solar ...

One of Stonehenge’s greatest mysteries may be even more impressive than previously thought. New research suggests the monument’s six-ton Altar Stone was transported roughly 700 kilometers (435 miles) ...

CNET’s expert staff reviews and rates dozens of new products and services each month, building on more than a quarter century of expertise. There's a moment every home pizza maker knows: the raw pie ...