Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Iron weighs more after it rusts.
16
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
German scientists claim to have evidence that suggests that our universe may exist inside of a computer simulated Matrix.
18
All Humans Are 99.9% Genetically Identical and 98.4% of human genes are the same as the genes of a chimpanzee.
51