Scientists aren't sure what color dinosaurs were.
312
The left ear is more responsive to words of love and emotion whispered into it than the right.
40
Most dust particles in your house come from dead skin.
48
Hot water can freeze faster than cold water.
181
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Iron weighs more after it rusts.
68
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
Sound travels about 4 times faster in water than in air.
408