An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
The human brain doesn't stop developing until about 25 years old.
102
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346
Your heart will pump about 212 million liters in its lifetime.
26
In ancient Egypt, priests plucked EVERY hair from their bodies, including their eyebrows and eyelashes.
130
Enamel is hardest substance in the human body.
61
The average person's skin weighs twice as much as their brain.
131