Warnings that artificial intelligence could end human civilization have shifted from science fiction to serious academic ...

Archaeologists have long known that complex societies can rise, flourish and then disappear so completely that only scattered ruins hint at what was lost. Now a new wave of research is sharpening the ...

(NewsNation) — Astronomers and other scientists have concluded that, with so many stars in the universe, there must be planets around some of those stars that support carbon-based life. And some of ...

Are there advanced alien “supercivilizations” lurking in our galaxy? If there are, they may use massive megastructures, such as a “Dyson sphere,” to harvest solar energy directly from a star. As first ...