Brass doorknobs automatically disinfect themselves in about 8 hours.
18
One ragweed plant can release as many as one billion grains of pollen!
51
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
Most liquid laundry detergents are alive with living organisms that help to break down stains!
88
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Diamonds can be shattered with a hammer.
-104
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
Aluminum used to be more valuable than gold!
84