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 speck of dust is half way in size between a subatomic particle and the Earth.
15
The only letter not appearing on the Periodic Table is the letter "J".
180
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
A cesium atom in an atomic clock beats over nine billion times a second.
43
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9