When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Diamonds can be shattered with a hammer.
-104
Cold water weighs more than hot water.
93
Sound travels fifteen times faster through steel than through air.
134
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Neanderthal man had a brain capacity 100cc larger than modern man's.
50