Across the world, archaeologists keep stumbling on structures so old, so large and so technically sophisticated that they ...

Researchers have identified engravings in Jordan and Saudi Arabia as the oldest known scaled building plans in human history. An international team of researchers including the University of Freiburg ...

A group of researchers have identified at least seven stars that might be surrounded by advanced alien mega-structures known as "dyson spheres." NBC News' Ellison Barber speaks with Janna Levin, a ...

Long held beliefs about the chronology and level of sophistication of early North American civilizations have been called into question by the recent discovery of what some consider to be America's ...

A team of Italian scientists took the world by storm last March when they announced the discovery of a colossal underground complex plunging nearly 3,500 feet beneath Egypt's Giza Plateau and linking ...

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