Learn more about how income inequality may increase the potential for political instability and may have led to the collapse of the Roman Empire and the Han Dynasty.

The Mughal Empire, spanning from the early 16th to the ... for one of India's most iconic dynasties, combining Turko-Mongol and Persian influences. Muhammad Shah (1719–1748) Known as "Muhammad ...

Genghis Khan died in 1227 fighting in China. Upon his successor’s death in 1259, squabbles over succession led to the Mongol ...

Although the team obviously can’t tie zircon minerals to the Roman Empire’s collapse, their lengthy migration inside frozen ...

“When it comes to the fall of the Roman Empire, this climate shift may have been the straw that broke the camel’s back,” Tom Gernon, professor of Earth science at the University of ...

The Roman Empire has never ceased to fascinate the world, even after the fall of its western half 1½ millennia ago. And with ...

A University of Southampton spokeswoman said: “Historians have long debated the role of climatic cooling in the fall of the Roman empire. “This new research strengthens the case that a brief ...

THE SOCIAL GENOME: The New Science of Nature and Nurture, by Dalton Conley THE DECLINE AND FALL OF THE HUMAN EMPIRE: Why Our Species Is on the Edge of Extinction, by Henry Gee In 2012, NPR ...