A 'jiffy' is an actual unit of time for 1/100th of a second!
66
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
The only letter not appearing on the Periodic Table is the letter "J".
180
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Iron weighs more after it rusts.
68
In zero gravity, a candle's flame is round and blue.
16
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199