Poor eyesight (myopia) is associated with higher IQ.
232
Intelligent people have more zinc and copper in their hair.
233
Intelligent men tend to be more sexually faithful.
31
You can only remember 4 things at a time.
31
Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
17
The higher someone’s I.Q. the more likely they are to be sleep deprived.
29