Intensive training for firefighters to equip themselves with knowledge and skills needed to protect people and property in this new era complex structures This is a new evolution in the advancement of ...

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 ...

Across the world, archaeologists keep stumbling on structures so old, so large and so technically sophisticated that they seem to have no right to exist in the eras that produced them. From submerged ...

Although human constructions have modified natural spaces for millennia, few plans or maps predate the period of the literate civilizations of Mesopotamia and Ancient Egypt. Researchers from the ...

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 ...