Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Nylon is made from coal and petroleum.
42
Most liquid laundry detergents are alive with living organisms that help to break down stains!
88
Sound travels about 4 times faster in water than in air.
408
Iron weighs more after it rusts.
68
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Out of all the senses, smell is most closely linked to memory.
146