What if humanity isn’t the first or the only intelligent civilization to arise in the Milky Way? In this video, we dive into one of the most fascinating questions in astrophysics: Who (or what) could ...

Known as the Campana structure, this pyramid was built using tephra, or volcanic ejecta, produced by the catastrophic Tierra ...

Civilizations die in familiar patterns ... The great urban centers die first, falling into irreversible decay. Central authority unravels. Artistic expression and intellectual inquiry are replaced ...

First up, how do you determine our “earliness”. You start with a function called the appearance rate, which tells us how many intelligent civilizations are evolving from primordial goop at a ...

making it the largest building in North America until the first skyscrapers rose in New York some 800 years later. Mayan civilization is believed to have supported a population of more than 10 ...

Those sources told the story like this: Years ago, anthropologist Margaret Mead was asked by a student what she considered to be the first sign of civilization in a culture. The student expected ...

The roots of civilization were planted along with the first crops of wheat and barley, and it’s not a stretch to say that the mightiest of today’s skyscrapers can trace their heritage to the ...