Brass doorknobs automatically disinfect themselves in about 8 hours.
18
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Sound at the right vibration can bore holes through a solid object.
134
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304
Scientists in Germany have developed a candy that doesn't cause cavities.
11
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
One barrel of petroleum holds 42 gallons.
20