Scientists aren't sure what color dinosaurs were.
312
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
One cubic foot of gold weighs more than 1,200 pounds!
78
Out of all the senses, smell is most closely linked to memory.
146
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17
Aluminum used to be more valuable than gold!
84