There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
If your DNA was stretched out it would reach to the moon 6,000 times.
256
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
All 13 minerals necessary for human life can be found in alcohol beverages.
282
Human hair and fingernails continue to grow after death.
7
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
The human eye blinks an average of 4,200,000 times a year.
233