Throughout history, humanity has demonstrated an insatiable desire to build bigger, reach higher, and create structures that seem to defy the laws of physics and imagination. From ancient pyramids to ...

A building four times the size of any house around it stood at the entrance of a small prehistoric settlement in northeastern Romania, positioned so that anyone arriving from the south would see it ...

There's rarely time to write about every cool science-y story that comes our way. So this year, we're once again running a special Twelve Days of Christmas series of posts, highlighting one science ...

In Botoșani County, Romania, a team of archaeologists uncovered a monumental mega-structure dating back 6,000 years. This discovery challenges our basic ideas about how human societies developed.

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 ...