The average temperature at 40,000 feet above sea level is -60 F.
56
In zero gravity, a candle's flame is round and blue.
16
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
Iron weighs more after it rusts.
68
One cubic foot of gold weighs more than 1,200 pounds!
78
Each day, up to 150 species of life become extinct.
-23
Diamonds can be shattered with a hammer.
-104