The most mind-blowing facts

1. The inside of the vagina and the inside of a cheek is made of the same tissue.
2. There are more hydrogen atoms in a teaspoon of water than there are teaspoons of water in the sea.
3. A blue whale's fart bubble is large enough to hold a horse.
4. From when it was discovered to when it was declassified as a planet, Pluto did not make a full orbit around the sun.
5. 90% of the population on Earth lives in the Northern Hemisphere.
6. The measurement of time, the second, is called that because it's the second division of the hour. (Why aren't minutes "first's?)
7. The word bed actually looks like a bed.
8. Human beings only use one nostril at a time. Each nostril takes a turn at being dormant (about 5 minutes), as the other nostril does all the work.
9. All of the planets could fit between the earth and the moon.
10. Hippos have pink urine.
11. There were still mammoths roaming the earth by the time the pyramids were being constructed.
12. The world's largest living organism is one huge mushroom that lives underground somewhere in North America.
13. Male giraffes continuously headbutt females in the bladder until they urinate. He then tastes the pee to determine whether the female is ovulating. If she is, it's business time.
14. 111,111,111 x 111,111,111 = 12,345,678,987,654,321.
15. It would take 1,200,000 mosquitoes, each sucking once, to completely drain the average human of blood.
16. Abalones (a snail) have 5 assholes.
17. If you eat a polar bear liver, you will die. Humans can't handle that much vitamin A.
18. Cats have spiked penises due to female cats mating with multiple male cats throughout a short period. The spikes are meant to scrape out any sperm from other male cats that previously mated with the female.
19. Duck vaginas have developed "dead ends" to protect them from being raped by other ducks.
20. There are more trees on Earth than stars in the Milky Way.