It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
90 percent of women who walk into a department store immediately turn to the right.
134
Women rate men more attractive if other women are looking and smiling at him.
17
People are more likely to tilt their heads to the right when kissing instead of the left (65 percent of people go to the right!)
278
Half of all Americans over the age of 55 have no teeth.
39
Males sweat 40% more than females.
104
The offspring of two sets of identical twins are legally cousins but genetically siblings.
63
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.
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