Aphantasia a condition where people are unable to form mental images in their head. People with aphantasia are also less likely to have an inner monologue.

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Dogs see the invisible magnetic fields surrounding the Earth due to the Cryptochrome molecule in their eyes. This sense allows a dog to find their owners and homes when they've gotten lost many miles from home.

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There are no words in the English language that rhyme with month, orange, silver, or purple

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Heat is the deadliest weather condition.

Tornadoes, hurricanes, and flooding can devastate entire towns at once, but the weather condition that proves deadliest to humans is actually heat.

Looking at the numbers from the past 30 years, tornadoes caused an average of 70 deaths a year and flooding an average of 81, but heat caused an average of 130 deaths a year. If you don't have access to air conditioning or sufficient water, excessive heat can be deadly.

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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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