Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Iron weighs more after it rusts.
16
The bark of an older redwood tree is fireproof.
65
German scientists claim to have evidence that suggests that our universe may exist inside of a computer simulated Matrix.
18
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38