One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
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
Sound travels about 4 times faster in water than in air.
408
One 75-watt bulb gives more light than three 25-watt bulbs.
57
There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
13
Iron weighs more after it rusts.
16