Gary Webb was a Pulitzer Prize-winning reporter, but the media did everything it could to discredit his three-part exposé that revealed links between the CIA, the revolution in Nicaragua, and the crack epidemic that gripped Los Angeles in the 1980s.

Researchers determined what the chewer looked like, their gender, their diet, and their lifestyle — all from this piece of multi-millennia-old gum that was found in Denmark.

From promoting incest to spreading apocalyptic prophesies, David Berg was one of history's most depraved cult leaders — with as many as 10,000 followers across the world.

Not only is this the largest blue whale fossil ever uncovered, but it also indicates that the species lived 1.5 million years earlier than we thought.

A 2010 investigation of Dr. Kermit Gosnell's clinic in West Philadelphia revealed that he and his staff not only provided illegal late-term abortions, but also killed viable newborns after birth by cutting their spines with scissors.

"Runaway Train" raised awareness of 36 missing children across America, and 21 of the kids were later reported to be found. But many of their stories did not have happy endings.

Invented during the reign of England's King Henry VIII for use at the Tower of London, the scavenger's daughter was a metal device that forced its victims into a kneeling position, painfully compressing their bodies until they bled from the ears.

From disturbing images of feral children and shrunken heads to haunting pictures of human experiments and murderous cults, see the creepiest photographs that plumb the dark side of history.

In addition to cocaine, researchers found ketamine, Xanax, Valium, as well as banned pesticides and other harmful consumer products.

With a lack of ancient human bone excavations in the region, finding human DNA within this piece of chewed-up birch bark was a huge victory.