Rudolf Virchow's work spanned pathology, forensics, and cancer research. But for all his work, Virchow was also quite ignorant on two of the biggest medical advancements in modern medicine.

After beginning by correcting his father's math at 3 years old, Carl Friedrich Gauss became one of the most influential mathematicians the world has ever seen.

Ibn Battuta traveled the territory of what is now 44 countries, married at least seven times, and wrote the most comprehensive account of 14th-century life around the globe to date.

The earthquakes, weather events, and tsunamis caused by the Krakatoa eruption of 1883 were felt even thousands of miles away.

Cochise fought for the freedom of his people, but Union betrayal and depleted resources kept him from achieving true liberation for the Apache.

The evergreen stories written by Charles Perrault are still told to children today as they're tucked into bed at night.

The Methuselah tree is so well protected as the oldest tree in the world that its location has remained unknown to the public since its discovery in 1957.

Diagnosed with autism, Stephen Wiltshire was nonverbal until age seven. Now, he draws entire cities from memory.

With his extensive list of Nazi criminals, Simon Wiesenthal made sure that all who had wronged him and his fellow Jews during the Holocaust got what was coming to them.

Lynette Dawson went missing almost four decades ago. Now, a journalist's podcast may have finally solved the mystery of her disappearance.

Chief Joseph was determined not to abandon his ancestral lands and to stand his ground without violence. But the U.S. government had other ideas.