One cubic foot of gold weighs more than 1,200 pounds!
78
Iron weighs more after it rusts.
16
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
One ragweed plant can release as many as one billion grains of pollen!
51
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
The banana plant cannot reproduce itself. It can be propagated only by the hand of man.
155
Indoor pollution is 10 times more toxic than outdoor pollution.
62