There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
93
Early American humans hunted car-size armadillos and used their shells for houses.
12
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
All 13 minerals necessary for human life can be found in alcohol beverages.
282
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266