Sound at the right vibration can bore holes through a solid object.
134
Nearly 50% of the world's scientists are assigned to military projects.
71
Iron weighs more after it rusts.
16
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
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
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Pure water (H2O) does not conduct electricity on its own.
46