Archaeologists have made a sensational discovery beneath the Baltic Sea - a 3,000-foot-long stone wall that could upend ... to the Mesolithic Age, these ancient builders likely never imagined ...

In 1979, Yin became a guardian of the Guangwu Great Wall, patrolling daily to deter villagers from taking any bricks. In the 1980s, he measured the wall using a spool of rope and a tape measure, with ...