When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
Donkeys kill more people annually than plane crashes.
The most children born to one woman was 69, she was a peasant who lived a 40 year life, in which she had 16 twins, 7 triplets, and 4 quadruplets.
Your fingernails grow faster in summer.
It's impossible to kill yourself by holding your breath.
You burn 26 calories in a one minute kiss.
The roar that we hear when we place a seashell next to our ear is not the ocean, but rather the sound of blood surging through the veins in the ear.
When glass breaks, the cracks move at speeds of up to 3,000 miles per hour.
Caffeine boosts memory.
The majority of suicides occur on a Monday.
You can start a fire with ice.
It is impossible to hum if your nose is plugged.
If you get water flowing fast enough, it can cut metal.
You burn more calories sleeping than you do watching television.
There are more nerve cells in the human brain than there are stars in the Milky Way.
Only humans shed emotional tears.