Pumice is the only rock that floats on water.
14
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
Most dust particles in your house are made from dead skin!
67
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Scientists aren't sure what color dinosaurs were.
312
Sound at the right vibration can bore holes through a solid object.
134