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
We share 70% of our DNA with a slug.
218
Poor eyesight (myopia) is associated with higher IQ.
232
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
The human eye blinks an average of 4,200,000 times a year.
233
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11