Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
65
A ball of glass will bounce higher than a ball made of rubber.
73
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Nylon is made from coal and petroleum.
42
No matter how cold it gets, gasoline will not freeze.
107
Iron weighs more after it rusts.
68
Liquid TIDE laundry detergent glows under a blacklight.
96
Neanderthal man had a brain capacity 100cc larger than modern man's.
50