Many skyscrapers contain such devices, called tuned mass dampers, for the same purpose, but the Taipei 101 pendulum is ...

Archaeologists have long known that complex societies can rise, flourish and then disappear so completely that only scattered ...

Archaeologists have long known that complex societies can unravel with startling speed, but a growing body of evidence ...

Ancient civilizations left behind enigmatic sites like the Plain of Jars, Nazca Lines, Paracas Candelabra, Yonaguni Submarine ...