When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
Your thumb is about the same size as your nose.
124
Enamel is hardest substance in the human body.
61
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
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
Research has determined that most people are happiest at 7:26pm on a Saturday night.
69
If the human eye was a digital camera, it would have 576 megapixels.
25
Poor eyesight (myopia) is associated with higher IQ.
232