Brass doorknobs automatically disinfect themselves in about 8 hours.
18
According to studies, men change their minds two to three times more often than women.
72
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
Nylon is made from coal and petroleum.
42
Sound travels about 4 times faster in water than in air.
408
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
The only letter not appearing on the Periodic Table is the letter "J".
180