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21 Real Facts That'll Make You Say, "That Fucked Me Up"

Prepare your brain — these are gonna hurt it.

We asked the BuzzFeed Community to send us a mind-blowing fact they know. Here are their world-shattering contributions:

1. Today, your body is almost completely composed of different atoms than it was a year ago.

2. You were once the youngest person alive.

3. The Great Pyramids were older to Cleopatra than Cleopatra is to us.

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People tend to think of Cleopatra and the Pyramids at Giza as products of the same era, but the Great Pyramid was completed around 2550 BCE, more than 2,500 years before Cleopatra died in 30 BCE.

4. There are more atoms in a single glass of water than there are glasses of water in every ocean on Earth.

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If we consider a "glass" of water to be 200 grams (which is also 200 mL), estimate how much water is in the ocean, and do the math on how many water molecules there are in 200 grams of water, there are roughly 6.6855*10^24 molecules in 200 mL of water, as compared to roughly 6.67*10^21 200 mL-sized portions of water in the Earth's oceans.

5. However, there are more possible versions of a shuffled standard deck of cards than there are atoms on Earth.

6. Everything in the universe is either a potato or not a potato.

7. The person closest to your right is the person farthest to your left.

8. Barack Obama has won more Grammy awards than Katy Perry.

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Yep, President Barack Obama has two Grammy wins (in the Spoken Word category, for his memoirs), while Katy Perry has many nominations and zero wins. Jimmy Carter and Bill Clinton also have more wins than Katy.

9. Someone who studies atoms is just a bunch of atoms trying to understand itself.

10. The term "mad hatter" may come from the fact that hat making used to involve mercury, which made hatters exhibit strange symptoms.

11. If bees were paid minimum wage for their labor, a jar of honey would cost $182,000.

12. There are some really strange similarities between the Lincoln assassination and the Kennedy assassination.

13. Oxford university is older than the Aztec empire and the printing press.

14. If you think about it, the brain named itself.

15. We never actually touch anything.

16. If two babies are conceived at the same time but one is born two months prematurely, that baby will be two months older than the other baby.

17. The difference between 1 million seconds and 1 trillion seconds is almost 40,000 years.

18. The fact that the moon, as viewed from Earth, appears almost exactly the same size as the sun during a solar eclipse is a complete coincidence of the cosmos.

19. John Tyler was the country's 10th president. He was born in the 1700s. He has two living grandchildren.

20. Jimi Hendrix and George Handel lived right next door to each other.

21. During your lifetime, you will produce enough saliva to fill two swimming pools.

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