The world's shortest man measures only 21.5 inches.
73
The human brain uses approximately as much energy as a 10 watt light bulb.
120
A human being loses an average of 40 to 100 strands of hair a day.
133
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Tigers can see 6 times better at night than humans.
305
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
It takes approximately 12 hours for food to entirely digest.
93
Your fingernails grow faster in summer.
744