A cubic yard of air weighs about 2 pounds at sea level.
31
Sound at the right vibration can bore holes through a solid object.
134
According to studies, men change their minds two to three times more often than women.
72
Pure water (H2O) does not conduct electricity on its own.
46
Forensic scientists can determine a person's sex, age, and race by examining a single strand of hair.
101
Scientists are now able to grow 'beating' heart tissue in a lab!
162
The average home creates more pollution than does the average car.
33
