By far Gustave Eiffel’s most well-known work, the Eiffel Tower was designed for the 1889 World’s Fair to celebrate the 100th ...

Along with a history of racist wartime propaganda, other forms of hateful posters and political flyers were persistent throughout the 20th century. The infamous white supremacist group Ku Klux Klan ...

Philip Chism was just 14 when he murdered his 24-year-old math teacher Colleen Ritzer at Danvers High School before dumping her corpse behind the school.

In 1900, the lighthouse keepers on a remote Scottish island vanished. The official report called it an accident. But suspicious clues – and a puzzling logbook – point to a darker explanation.

First opened in 1970 and shut down in 2011, the Élan School was the "last resort" for parents of teens with behavioral problems — and allegedly a site of systemic abuse. For some, the idyllic woods of ...

Forty years before the British fought the Nazis, they used history's first concentration camps to commit genocide during the Boer War.

On March 11, 2011 in Bethesda, Maryland, Brittany Norwood viciously killed her co-worker Jayna Murray over a pair of leggings in what's known as the Lululemon murder.

The Sea Peoples terrorized Egypt and the Mediterranean during the Bronze Age, but their identity and origins remain mysterious to this day.

A 200-square-mile area in southeastern Massachusetts, the Bridgewater Triangle has long been known as a vortex of unexplained phenomena.

Between 1971 and 1973, an unknown serial killer in Rochester, New York strangled three girls who had the same first and last initial in what’s known as the Alphabet Murders.

In celebration of the vast unknown of Earth's oceans, we present of our favorite fascinating and amazing facts about ocean animals!

The heart attack gun fired a dart made of frozen shellfish toxin that would enter the target's bloodstream and kill them in mere minutes without leaving a trace. In 1975, more than 30 years of almost ...