History features many unusual military encounters, but the 9th-century conflict in Scottish history between a Pictish nobleman and a Viking Earl ended with a rare fatality.

When experts search for the absolute worst period in history, they do not point to the Black Plague or World War II.

In 1939, a university student made a simple scheduling mistake that led to a major mathematical discovery.

In May 1846, a group of 89 American pioneers left Springfield, Illinois, heading toward California with dreams of abundant land.

The Montague Street Bridge in South Melbourne, Australia, holds a remarkable record for stopping modern transport in its tracks.

June and Jennifer Gibbons chose to sever all communication with the outside world, speaking only to one another in a rapid, secret language.

In the dimly lit banquet halls of ancient Greece, the focus often shifted from deep philosophical discussion to a game of precision involving leftover wine.

Hundreds of years ago, a massive empire figured out how to grow crops on top of water, feeding hundreds of thousands of people in the middle of a lake.

In 2001, a Chinese farmer with only a third-grade education watched toxic wastewater destroy his home and land.

When the radiography results appeared, the medical staff found something entirely unexpected inside her abdomen.