Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
Hot water can freeze faster than cold water.
181
Pumice is the only rock that floats on water.
14
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
Most dust particles in your house come from dead skin.
48