"vagina" can be pluralized as "vaginas" or "vaginae"; also, Google Chrome only recognizes the latter as correct.

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Brazil, Iran, Cambodia, and 6 other countries all have the same name for their currency, and the origin for each is the same.

Source

First extrasolar planet was discovered by an astronomer named Bruce Campbell.

Source

There are 152,000 named species of flies

from http://www.sciencealert.com.au/news/20112403-21984.html

Spiders have transparent blood.

Venus is the only planet in the solar system that rotates clockwise.

160 cars can drive side by side on the Monumental Axis in Brazil, the world's widest road.

Polar bears are left-handed.

The largest gathering of Lady Gaga impersonators took place at this year ’s Grammy Awards.

On average 100 people choke to death on ballpoint pens every year.

An 84-year-old man survived 5 days in the Arizona desert by drinking windshield wiper fluid.

Hyphephilia refers to people who are aroused by touching fabrics.

Lunaediesophobia is the fear of Mondays.

60,000 plastic bags are being used in the United States every 5 seconds.

Nosocomephobia fear of hospitals.

Didaskaleinophobia is the fear of going to school

The human nose can distinguish more than 10,000 different smells.

Drinking a glass of ice water burns calories.

If you touch your tongue while yawning, it can stop the yawn

In complete darkness, your eyes see a dark gray color instead of black. ( color is known as Eigengrau)