A cubic yard of air weighs about 2 pounds at sea level.
31
In zero gravity, a candle's flame is round and blue.
16
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
According to studies, men change their minds two to three times more often than women.
72
The average temperature at 40,000 feet above sea level is -60 F.
56