Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Sound travels fifteen times faster through steel than through air.
134
Nylon is made from coal and petroleum.
42
Cold water weighs more than hot water.
93
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13