Human hair and fingernails continue to grow after death.
7
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Enamel is hardest substance in the human body.
61
If your DNA was stretched out it would reach to the moon 6,000 times.
256
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
A human brain produces as many as 12,000 to 50,000 thoughts per day, depending on how deep a thinker a person is.
23
The human brain is more active during sleep than during the day.
28