Iron weighs more after it rusts.
68
Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Each day is longer than the previous on by 0.00000002 seconds which is 13 seconds each century!
116
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
The force of a suction cup is calculated using F=AP.
15