Indoor pollution is 10 times more toxic than outdoor pollution.
62
Most dust particles in your house come from dead skin.
48
Iron weighs more after it rusts.
68
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
For every gallon of sea water, you get more than a quarter pound of salt.
45
The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
One ragweed plant can release as many as one billion grains of pollen!
51