The only letter not appearing on the Periodic Table is the letter "J".
180
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
German chemists made a replica of a trophy the size of one molecule.
68
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Most liquid laundry detergents are alive with living organisms that help to break down stains!
88
Iron weighs more after it rusts.
16
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199