Aluminum used to be more valuable than gold!
84
Most dust particles in your house come from dead skin.
48
Nearly 50% of the world's scientists are assigned to military projects.
71
Sound travels fifteen times faster through steel than through air.
134
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Diamonds can be shattered with a hammer.
-104
One third of the electricity produced on earth is used to power electric light bulbs!
75