For every gallon of sea water, you get more than a quarter pound of salt.
45
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
Sound travels fifteen times faster through steel than through air.
134
Nylon is made from coal and petroleum.
42
German chemists made a replica of a trophy the size of one molecule.
68
One ragweed plant can release as many as one billion grains of pollen!
51
Nearly 50% of the world's scientists are assigned to military projects.
71