Girls have more tastebuds than boys.
124
Only about 2% of the world population has green eyes.
36
Forty percent of Americans have never visited a dentist.
33
Awarding people money for doing well in IQ tests causes them to score better, $10 increased people's score by an average of more than 20 IQ points. IQ tests don’t just measure intelligence - they also measure effort.
9
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
Intelligent people have more zinc and copper in their hair.
233
Americans will spend more on cat food this year than baby food.
32
