Between 2005 and 2008, Gary Hilton robbed and beheaded four people in Florida, North Carolina, and Georgia.

The weapon may be a famed Ulfberht sword.

How the population of buffalo in North America went from 30 million to 325 in a century.

In 1991, excavators discovered a vast burial site in lower Manhattan lost for centuries. Today, it's the African Burial Ground National Monument.

These legends were nearly forgotten by history.

The victim left his truck parked at a gas station for a few days, and when he returned the truck had vanished — with all noodles in tow.

Though Fred Valentich disappeared almost 40 years ago, his disappearance still captures the attention of UFO hunters.

Researchers used a particle accelerator the size of a stadium in order to gain this unprecedented look inside these prehistoric eggs.

Even though she looks like the doll, Valeria Lukyanova has called her Barbie nickname "degrading."

Mariya Oktyabrskaya's husband was killed by the Nazis during World war 2, so she purchased a tank and took revenge in her own hands.