Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
The average home creates more pollution than does the average car.
33
Research indicates that plants grow healthier when they are stroked.
173
Iron weighs more after it rusts.
16
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
One third of the electricity produced on earth is used to power electric light bulbs!
75
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61