Between 2575 and 2465 B.C.E., the Pyramids of Giza were constructed as tombs for the pharaohs Khufu, Khafre, and Menkaure — but who built the pyramids?

Over the course of a three-week expedition, Ocean Census collected nearly 1,800 samples and discovered more than 100 new species.

Auriane Nathalie Laisne, a 22-year-old woman from France, was found dead in an abandoned Italian church on April 5 — and it may have been her boyfriend who killed her.

The gangster-turned-informant who inspired Goodfellas, Henry Hill's true story was far crazier than the 1990 film could ever portray.

Josh Powell killed himself and his two children in a fiery explosion in his Washington home in 2012 — and he may have murdered his wife Susan two years earlier.

"Ring Around the Rosie" was likely created as a children's singing game in 18th-century Germany — but some people believe it has much darker origins.

Reena Virk was a victim of bullying who desperately wanted to fit in with her small-town Canadian peers — then a mob of them beat and killed her in a horrific swarming attack.

Ralph "Sonny" Barger was just 20 years old when he took control of the Hells Angels in 1958. Under his leadership, the small California motorcycle club quickly grew into a notorious group with chapters across 63 countries.

After falling and hitting his head in his Ritz-Carlton Orlando hotel room, Bob Saget tragically died at age 65 on January 9, 2022.

Known as "Vinny Ocean," DeCavalcante crime family boss Vincent Palermo ruled northern New Jersey with an iron first, much like Tony Soprano.

An unidentified serial killer who murdered at least five women in London in 1888, Jack the Ripper's identity remains one of history's most infamous unsolved mysteries.