Most dust particles in your house come from dead skin.
48
Pumice is the only rock that floats on water.
14
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Diamonds can be shattered with a hammer.
-104
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
Galalith is a type of plastic that can be made from milk. It is odourless, insoluble in water, biodegradable, anti-allergenic, antistatic, and virtually non-flammable.
1
The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
5
A cubic yard of air weighs about 2 pounds at sea level.
31