Iron weighs more after it rusts.
16
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
4.5 pounds of sunlight strike the Earth each day.
27
One gallon of used motor oil can ruin approximately one million gallons of fresh water!
71
A ball of glass will bounce higher than a ball made of rubber.
73
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310