There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Dating back to the 1600's, thermometers were filled with Brandy instead of mercury.
16
Men have larger hearts; women's hearts beat faster.
77
If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
12
The pupil of the eye expands as much as 45 percent when a person looks at something pleasing.
130
The human sigh acts as a physiological reset button.
23
Our eyes are always the same size from birth, but our nose and ears never stop growing.
269
Within three days of death, the enzymes that once digested your food begin to eat you.
22