These heartbreaking Jacob Riis photographs from How the Other Half Lives and elsewhere changed America forever.

From his champion wrestling career to the eerie circumstances of his assassination, these facts about Abraham Lincoln may change the way you see the 16th president.

In 2013, a synthetic stimulant called flakka emerged in Florida — and wreaked havoc on users with its horrific side effects.

Better known as devil's breath, scopolamine more than lives up to its name.

Almost 40 years before the Holocaust, the concentration camp imprisonment and mass murder of the Herero and Nama people marked the first genocide of the 20th century.

On D-Day, more than 160,000 Allied troops converged on a single stretch of coast to commence the Normandy invasion known as Operation Overlord — and change modern history forever.

According to Anatoly Fomenko's New Chronology, history as we know it was fabricated by Christian scholars. Discover why he believes it and why he's not 100 percent crazy.

Clement Vallandigham was in the middle of demonstrating how another man might have accidentally killed himself — then he accidentally killed himself.

New evidence has unlocked the mysteries of the ancient Beringian population, a previously undiscovered group of Native Americans.

Crippling anxiety and depression are on the rise among a generation that feels greater pressure to be perfect than ever before.

Ernie Chambers was sick and tired of God's role in causing "widespread death, destruction and terrorization of millions upon millions of the Earth's inhabitants." So he sought a legal injunction.