Meet Havelock Ellis, the man who wrote the first English medical textbook on homosexuality — all the way back in 1897.

While Emma Darwin's marriage to first cousin Charles Darwin may have been a happy one, it demonstrated the dark consequences of inbreeding.

Vivien Thomas did groundbreaking work in the field of cardiac medicine. Incredibly, he had no medical degree.

When Annie Moore arrived in the U.S., she was too late to be processed that day. So the next day she became Ellis Island's first immigrant.

In 1945, a group of five U.S. Navy aircraft collectively known as Flight 19 disappeared in the Bermuda Triangle. They've never been found.

The Champawat Tiger killed more than 400 people in a four year span until finally the British got serious about hunting it down.

Dancer and actress Lola Montez left a trail of broken hearts — and one abdicated throne — across 19th-century Europe.

How the Rosenhan experiment showed that "it is clear that we cannot distinguish the sane from the insane in psychiatric hospitals."

Lisette Lee told everyone she was a wealthy heiress. It turned out she was trafficking thousands of pounds of marijuana across the United States.

Charles Lightoller never expected to survive the sinking of the Titanic, let alone World War I and World War II.