Sound travels fifteen times faster through steel than through air.
134
One cubic foot of gold weighs more than 1,200 pounds!
78
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
Pure water (H2O) does not conduct electricity on its own.
46
If the chemical sodium is dropped into water it will immediately and violently explode.
67