Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Pumice is the only rock that floats on water.
14
If you blowtorch Pepto-Bismol, you would get a hunk of metal.
114
Kissing actually has the biological purpose of passing on biological information and chemical signals to assess mating possibilities and status.
9
Sound travels about 4 times faster in water than in air.
408
According to studies, men change their minds two to three times more often than women.
72
Nearly 50% of the world's scientists are assigned to military projects.
71
A cesium atom in an atomic clock beats over nine billion times a second.
43