A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Pumice is the only rock that floats on water.
14
A cesium atom in an atomic clock beats over nine billion times a second.
43
Aluminum used to be more valuable than gold!
84
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101