The average temperature at 40,000 feet above sea level is -60 F.
56
Sound travels fifteen times faster through steel than through air.
134
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
One barrel of petroleum holds 42 gallons.
20
Each day, up to 150 species of life become extinct.
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