Hot water can freeze faster than cold water.
181
German chemists made a replica of a trophy the size of one molecule.
68
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
A cubic yard of air weighs about 2 pounds at sea level.
31
The only letter not appearing on the Periodic Table is the letter "J".
180
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
In zero gravity, a candle's flame is round and blue.
16