Babies cry but they don't produce tears until one to three months after birth.
238
Most people smile when they are frustrated, according to a study.
15
In one day an average person will take about 18,000 steps.
55
Only 2% of the Earth's population are natural redheads.
13
Infants spend more time dreaming than adults do.
102
In 2005, 25 percent of Americans over the age of 50 played video games, an increase from nine percent in 1999.
82
There are actually seven different types of twins: Identical, Fraternal, Mirror-Image, Polar Body (Half Identical), Mixed Chromosome, Superfecundation, and Superfetation.
20