Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Diamonds can be shattered with a hammer.
-104
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
A ball of glass will bounce higher than a ball made of rubber.
73
Your brain is 80% water.
525
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39