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
Iron weighs more after it rusts.
68
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
The sun is 330,330 times larger than the earth.
75
Nuclear power prevented an average of over 1.8 million deaths between 1971-2009 as a result of lower air pollution from reduced coal usage according to NASA.
5