Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Nuclear power prevented an average of over 1.8 million deaths between 1971-2009 as a result of lower air pollution from reduced coal usage according to NASA.
5
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
The bark of an older redwood tree is fireproof.
65
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
Hot water can freeze faster than cold water.
181
Iron weighs more after it rusts.
68