Horseshoe crab blood has helped humans fight disease since the 1970s, but if we keep over-harvesting it, there may be none of these crabs left to save us.

In August 1955, Carolyn Bryant claimed that 14-year-old Emmett Till sexually harassed her — which led to his horrific lynching days later. But more than 60 years later, she finally admitted that her accusation was a lie.

While most people know her as a master chef, Julia Child also served as a spy for the Office of Strategic Services, where she collected and analyzed top-secret intelligence.

When the Eiffel Tower was built by Gustave Eiffel in 1889, it was designed to be the main attraction of the World's Fair — but most Parisians hated it.

When Rocky Dennis died at age 16, he had already lived more than twice as long as doctors expected — and lived a fuller life than anyone thought possible.

Dubbed the "Mexican Madonna" and the "Queen Of Tejano Music," Selena Quintanilla was a budding superstar — until she was gunned down in March 1995.

A literally heartless insect known as the "murder hornet" that can sting you repeatedly and land you in the hospital? It's not a nightmare — it's the Asian Giant Hornet.

On January 30, 1972, British soldiers brutally killed 13 unarmed civilians who were participating in a civil rights march in the Northern Irish city of Derry.

Marilyn Monroe's mother Gladys Pearl Baker was a single woman living with paranoid schizophrenia when she gave birth to the future icon, and their relationship remained strained until Monroe's sudden death.

At least two people died trying to reach the infamous Into The Wild bus on Alaska's Stampede Trail after hiker Chris McCandless died there in 1992.