Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Pumice is the only rock that floats on water.
14
If the chemical sodium is dropped into water it will immediately and violently explode.
67
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
Each day, up to 150 species of life become extinct.
-23
Iron weighs more after it rusts.
16