Approximately 70 percent of the earth is covered by water. Only 1 percent of this water is drinkable.
65
Most dust particles in your house come from dead skin.
48
A ball of glass will bounce higher than a ball made of rubber.
73
The only letter not appearing on the Periodic Table is the letter "J".
180
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
The force of a suction cup is calculated using F=AP.
15