Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Galalith is a type of plastic that can be made from milk. It is odourless, insoluble in water, biodegradable, anti-allergenic, antistatic, and virtually non-flammable.
1
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
The force of a suction cup is calculated using F=AP.
15
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57