Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Pure water (H2O) does not conduct electricity on its own.
46
Aluminum used to be more valuable than gold!
84
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
Iron weighs more after it rusts.
68
Most dust particles in your house come from dead skin.
48
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44