Half of all Americans over the age of 55 have no teeth.
39
People who are lying to you tend to look up and to the left (their left).
178
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
Only 2% of the worlds population is blonde.
15
Humans are capable of running 40 mph according to a study by bio-mechanical expert Dr. Matthew Bundle. Today's fastest man, Usain Bolt, has a top speed of 28 mph.
34
During an average lifetime, a man will spend 3,350 hours removing 8.4 meters of stubble.
52
