Neanderthal man had a brain capacity 100cc larger than modern man's.
50
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
Diamonds can be shattered with a hammer.
-104
Iron weighs more after it rusts.
16
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
A cesium atom in an atomic clock beats over nine billion times a second.
43
Out of all the senses, smell is most closely linked to memory.
146
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65