Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
The average home creates more pollution than does the average car.
33
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
Most dust particles in your house come from dead skin.
48
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
Each day, up to 150 species of life become extinct.
-23
Balsa wood is classified as a hard wood!
41
Nylon is made from coal and petroleum.
42