Sound travels about 4 times faster in water than in air.
408
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
All Humans Are 99.9% Genetically Identical and 98.4% of human genes are the same as the genes of a chimpanzee.
51
Indoor pollution is 10 times more toxic than outdoor pollution.
62
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
Nylon is made from coal and petroleum.
42