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
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Poor eyesight (myopia) is associated with higher IQ.
232
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346