Of the 262 men who have held the title of pope, 33 have died by violence.

Leonardo da Vinci sketched plans for a humanoid robot in the 15th century.

The world’s youngest parents were 8 and 9 and lived in China in 1910.

The world’s youngest parents were 8 and 9 and lived in China in 1910.

The supersonic Concorde jet made its first trial flight on January 1, 1969.

New Orleans’ first Mardi Gras celebration was held in February, 1826.

In 1892, Italy raised the minimum age for marriage for girls – to 12.

While performing her duties as queen, Cleopatra sometimes wore a fake beard

February 1865 is the only month in recorded history not to have a full moon

The Union ironclad, Monitor, was the first U.S. ship to have a flush toilet.

A Roman-era couple, buried together, has been holding hands for 1,500 years.

Yellowstone is the world’s 1st national park. It was dedicated in 1872.

Ancient Egyptians shaved off their eyebrows to mourn the deaths of their cats.

Fire escapes, windshield wipers and laser printers were all invented by women.

The first-known contraceptive was crocodile dung, used by Egyptians in 2000 BC.