Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Each day, up to 150 species of life become extinct.
-23
Hot water can freeze faster than cold water.
181
The storage capacity of human brain exceeds 4 Terrabytes.
140
One ragweed plant can release as many as one billion grains of pollen!
51
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55