Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Scientists are now able to grow 'beating' heart tissue in a lab!
162
Aluminum used to be more valuable than gold!
84
The only letter not appearing on the Periodic Table is the letter "J".
180
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
Cold water weighs more than hot water.
93