When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
One cubic foot of gold weighs more than 1,200 pounds!
78
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Out of all the senses, smell is most closely linked to memory.
146
One ragweed plant can release as many as one billion grains of pollen!
51
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
German chemists made a replica of a trophy the size of one molecule.
68
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39