Each day, up to 150 species of life become extinct.
-23
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
If the chemical sodium is dropped into water it will immediately and violently explode.
67
One barrel of petroleum holds 42 gallons.
20
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
The average temperature at 40,000 feet above sea level is -60 F.
56