When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
No matter how cold it gets, gasoline will not freeze.
107
Cold water weighs more than hot water.
93
Sound at the right vibration can bore holes through a solid object.
134
Out of all the senses, smell is most closely linked to memory.
146
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108