If the chemical sodium is dropped into water it will immediately and violently explode.
67
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
According to studies, men change their minds two to three times more often than women.
72
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
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
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
The average home creates more pollution than does the average car.
33
Pure water (H2O) does not conduct electricity on its own.
46