In July 1947, something crashed on the Foster Ranch in New Mexico. What that object was, what the government said it was, and what the public thought it could be has created a near-mythical confusion that has lasted ever since.

A notorious SS officer and physician, Josef Mengele sent over 400,000 people to their deaths at Auschwitz during World War II — and never faced justice.

After 30 years of solemnly pledging "never again," the world stood by and watched in horror as another genocide unfolded — this time in Cambodia under Pol Pot.

King Aethelred II of England was crowned when he was just 10 years old, and his reign was marked by a series of blunders so bad that he was usurped by the King of Denmark in 1013.

Identity politics can lead to some truly violent outcomes. Case in point: the Aryan Brotherhood.

In 1932, Australia went to war against an enemy like none it had ever faced before: the emu.

"Rosie the Riveter" is regarded as a feminist icon today, but the image on which it was based had nothing to do with feminism.

Millions of people have spent the last two decades spouting alternative ideas about what may have happened on September 11, 2001, but are any of these 9/11 conspiracy theories even rooted in truth?

Inside the Aktion T4 program, the little-known euthanasia initiative that killed as many as 300,000 disabled people as the Nazis swept across Europe.

Some are convinced the government uses Area 51 to dissect aliens and study flying saucers. In truth, the classified site has been used to build spy planes — and dump toxic waste.