Women rate men more attractive if other women are looking and smiling at him.
17
There are actually seven different types of twins: Identical, Fraternal, Mirror-Image, Polar Body (Half Identical), Mixed Chromosome, Superfecundation, and Superfetation.
20
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
Children laugh about 400 times a day, while adults laugh on average only 15 times a day.
973
According to some estimates, Americans are sitting on $30 billion worth of unredeemed gift cards.
223
The world's youngest parents were 8 and 9 and lived in China in 1910.
130