The First 3D Film Was Shown in 1922

The first 3D film, called The Power of Love, had its premiere at Los Angeles' Ambassador Hotel Theater on September 27, 1922.

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When we sleep in unfamiliar surroundings, only half of our brain gets a good night's rest while the other half stands guard. This is called the first-night effect

It's thought to be a protective mechanism that keeps us alert to potential dangers in unfamiliar environments.

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King Tut's dagger, one of the most famous artifacts from his tomb, is believed to have been made from iron from a meteorite

The fact that the dagger was made from meteoric iron is significant, as it suggests that the Egyptians had knowledge of meteorites and their properties.

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2015 study suggests that just 10 minutes of chewing gum can remove 100 million bacteria from your mouth. It adds that it is as good as flossing!

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On a clear, moonless night the human eye can detect a match being struck 50 miles away.

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The shortest land border is 150 meters long and is shared by Botswana and Zambia

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The Ethiopian bible is the oldest, most complete and original bible on earth.

Written on goat skin in the early Ethiopian language of Ge’ez. It is also World’s first illustrated Christian Bible.

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The average erect gorilla penis is 1.25 inches (3cm) long, the average chimp or bonobo penis comes in at around 3.1″ (8cm) and the average human penis stands at around 5.1″ (13cm). Most primates, including chimpanzees, have a penis bone and achieve erections through muscle contraction.

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This is the Salvator Mundi, the most expensive painting ever sold. It depicts Jesus holding a transparent orb with his left hand and signing a cross with his right. It was sold in 2017 for $450.3M

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An adult produces enough hydrogen in their urine each year to drive a car 2,700 kilometres.

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A Chinese woman Ching Shih, nicknamed Mistress Zheng, was the most successful pirate in history. Ching's fleet consisted of approximately 400 pirate ships, and her army numbered 40,000 pirates. At the peak of her power, her army reached 80,000 members.

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Sailors once thought wearing gold earrings improved eyesight.

Earrings may have given pirates a bit of fashionable flair, but the accessories weren't worn simply for stylish reasons. Some pirates thought earrings could improve eyesight and ward off seasickness.

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A person who hides their pain behind a smile is called an “eccedentesiast.”

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The record for longest time without sleep was set in 1963 when 17 year-old Randy Gardner stayed awake on purpose for 11 straight days.

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