Imagine a world where humanity has not only gained the ability to travel and to populate space but has progressed even further than that. Humanity can now control and navigate multiple universes.

There is a silence in the night sky that has bothered me for as long as I can remember.” That line, attributed to Richard ...

Human history is littered with expired civilizations, and scholars and archaeologists have made a determined effort to ...

The feeling will be familiar to many who have visited the great cities of history: I had come to Athens for the first time and made a pilgrimage to its democratic Assembly, Plato's Academy, and ...

New research explores how technological civilizations grow, collapse, and recover, and what this means for detecting ...