Roughly a quarter of the world's people live in China.
50
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
On average a woman has 4 sexual partners in her lifetime.
-143
A study had men report their own penis size, and the average was found to be 6.1-6.5 inches. A subsequent clinical study actually measured penises, and found the average size to be 5.1-5.7 inches.
-3
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
Only about 2% of the world population has green eyes.
36
People who are lying to you tend to look up and to the left (their left).
178
The leading cause of poisoning for children under the age of six in the home is liquid dish soap.
42