Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
According to studies, men change their minds two to three times more often than women.
72
Your brain is 80% water.
525
One ragweed plant can release as many as one billion grains of pollen!
51
Sound travels fifteen times faster through steel than through air.
134
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Balsa wood is classified as a hard wood!
41