If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
Human hair and fingernails continue to grow after death.
7
By weight, Bone is five times stronger than steel.
417
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
93
The human brain uses approximately as much energy as a 10 watt light bulb.
120
A person can live without food for about a month, but only about a week without water.
156
A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18
Tigers can see 6 times better at night than humans.
305