Each day, up to 150 species of life become extinct.
-23
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Sound travels fifteen times faster through steel than through air.
134
The average home creates more pollution than does the average car.
33
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
One ragweed plant can release as many as one billion grains of pollen!
51
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61