After John du Pont started a training facility for wrestlers on his Foxcatcher estate in Pennsylvania, he grew close with former Olympian Dave Schultz — then he murdered him.

For eight straight months starting in September 1940, German planes bombed British cities in a relentless campaign known as the Blitz — but the people of Britain kept calm and carried on.

Starting in October 1977, Hillside Stranglers Kenneth Bianchi and Angelo Buono murdered 10 women and dumped their bodies in the hills surrounding Los Angeles.

On August 14, 1980, Playmate of the Year and budding actress Dorothy Stratten was gunned down by her estranged husband. She was just 20 years old.

These tragic photos and stories capture the horrors of the Nanking Massacre — a.k.a. the Rape of Nanking — committed by Japanese soldiers against Chinese civilians.

From 1961 to 1971, the U.S. used the herbicide and defoliant Agent Orange in Vietnam, leaving behind millions of victims with deadly diseases and birth defects.

Built between 9500 and 8000 BCE in present-day Turkey, Göbekli Tepe is a Neolithic place of worship that predates Stonehenge by over 6,000 years.

On a busy Saigon street in June 1963, Buddhist monk Thích Quảng Đức lit himself on fire and set off a chain of events that led to America's involvement in the Vietnam War.

Despite his mythic handicap, Ivar the Boneless was the most fearsome Viking of his time and conquered England with his heathen army.

Known informally as the Japanese mafia, the Yakuza are a 400-year-old criminal syndicate that carries out everything from human trafficking to real estate sales.