Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15
The average temperature at 40,000 feet above sea level is -60 F.
56
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Nylon is made from coal and petroleum.
42
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Hot water can freeze faster than cold water.
181
There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
13