Aluminum used to be more valuable than gold!
84
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Iron weighs more after it rusts.
16
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Dr.Jonas Salk, the man who came up with the cure for polio, didn’t patent the drug. This made the drug more affordable to the general public, and he lost out an an estimated $7 billion dollars for himself.
41
A single cup of gasoline, when ignited, has the same explosive power as five sticks of dynamite.
57
Iron weighs more after it rusts.
68