Holocene(10 KYA - Present)
Research at a 4,200-year-old temple in Peru yields clues to an ancient people who may have clocked the heavens
May 2007 | By Anne Bolen
Archaeologist Alanah Woody's infectious enthusiasm for Nevada's rock art knows no bounds
June 2005 | By Christopher Hall
Who roamed the Colorado Plateau thousands of years ago? And what do their stunning paintings signify?
March 2005 | By Kurt Repanshek