Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
One barrel of petroleum holds 42 gallons.
20
Your brain is 80% water.
525
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
According to studies, men change their minds two to three times more often than women.
72
Diamonds can be shattered with a hammer.
-104
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3