A 'jiffy' is an actual unit of time for 1/100th of a second!
66
In zero gravity, a candle's flame is round and blue.
16
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
If the chemical sodium is dropped into water it will immediately and violently explode.
67
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Out of all the senses, smell is most closely linked to memory.
146
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199