There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Iron weighs more after it rusts.
68
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
The sun is 330,330 times larger than the earth.
75
Scientists aren't sure what color dinosaurs were.
312
Hot water can freeze faster than cold water.
181