Would you cross a raging river 18 m (59 ft) below, knowing the only thing that supported you was a bunch of grass? Using nothing but simple blades of grass, Andean villagers built a suspension bridge ...

Secrets of Lost Empires is a two-part television series produced by PBS Nova, Boston. Both series explore experimentally how ancient civilizations achieved notable constructions without modern ...

New technology and the opening of previously closed societies are ushering in a golden age of archaeology, uncovering the secrets of some of history's most famous empires. Smithsonian Channel has ...