Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Sound travels fifteen times faster through steel than through air.
134
Diamonds can be shattered with a hammer.
-104
Sound at the right vibration can bore holes through a solid object.
134
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
Some toothpastes and deodorants contain the same chemicals found in antifreeze.
38
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61