One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
4.5 pounds of sunlight strike the Earth each day.
27
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Sound at the right vibration can bore holes through a solid object.
134
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
One ragweed plant can release as many as one billion grains of pollen!
51