On May 1, 1990, Greggory Smart was brutally murdered in his own home — and months later, it was revealed that Greggory’s wife Pamela Smart had sexually manipulated one of her 15-year-old students into killing him.

For the past 14 years, scientists have been growing a tree named "Sheba" from a 1,000-year-old seed that was found in a cave near Jerusalem, and now researchers believe it may be a lost species that was mentioned in the Bible.

Born and raised in Australia, Steve Irwin was a zookeeper and conservationist who became one of the world's most iconic wildlife enthusiasts.

The newly-discovered drawings include a decapitated head, a llama, and even a knife-wielding orca.

On September 13, 1990, 14-year-old Gina Grant bludgeoned her abusive mother to death with a crystal candlestick holder. Five years later, Harvard revoked Grant's admission after an anonymous source notified the school of her criminal history.

On November 27, 1978, Dan White snuck into City Hall and assassinated gay rights activist Harvey Milk and San Francisco’s mayor, George Moscone.

Analysis of the Trypillia megasites in Ukraine suggests that they were built as early as 5500 B.C.E., challenging the notion that the oldest cities in world history were in Mesopotamia.

In 1991, Dixon, Illinois Comptroller and Treasurer Rita Crundwell began stealing city funds to finance her show-horse breeding empire, allowing her hometown to fall into a state of financial crisis while she lived a lavish lifestyle.

An ancestry DNA test helped Luis Armando Albino's family find him 73 years after he was kidnapped while playing at a park in Oakland, California, with his older brother.

Angie Bowie was married to David Bowie from 1970 to 1980 — and the couple's relationship was anything but conventional.

Experts believe that Mozart composed "Serenade in C" in the 1760s — perhaps even before he turned 13.