Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
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 left ear is more responsive to words of love and emotion whispered into it than the right.
40
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
A cubic yard of air weighs about 2 pounds at sea level.
31