Iron weighs more after it rusts.
68
Rafflesia Arnoldii is the largest flower in the world and can grow as big as an umbrella.
42
Sound at the right vibration can bore holes through a solid object.
134
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
A cubic yard of air weighs about 2 pounds at sea level.
31
Aluminum used to be more valuable than gold!
84
For every gallon of sea water, you get more than a quarter pound of salt.
45
Cold water weighs more than hot water.
93